STATISTICS-PAGE 5
STATISTICS MCQ- PAGE 5
1. Agricultural Statistics is mostly collected by :
(A) Department of Economics and Statistics at central level.
(B) Department of Economics and Statistics at state level.
A) (A)
B) (B)
C) both (A) and (B)
D) none of these
Ans: C
2. Which statement is not correct:
A) the units of inheritence are genes.
B) a gene's physical location on chromosome is called locus.
C) version of gene at a given locus are called alleles.
D) there is only one possible alleles at each locus.
Ans: D
3. The data refers to the index numbers of Agricultural production with base year as the triennium end given details regarding
A) food grains B) non food grains
C) food grains and non food grains D) none of these
Ans: C
4. Probability of including a specified unit in a sample of size 4 out of 20 units is :
A) 1/5
B) 1/4
C) 1/20
D) 1/80
Ans: A
5. If the probability of occurrence of two independent events A and B respectively are 0.3 and 0.4, then which of the following is true :
A) P (A or B ) = 0.12
B) P (A and B ) = 0.12
C) P (A and B ) = 0.70
D) P (A or B ) = 0.10
Ans: B
6. The arithmetic mean of 5 observations is 5 and range is zero. The standard deviation of these observations is
(a) 0 (b) 1 (c) 2 (d) 3
Ans: A
7. Let ‘r’ be the correlation co-efficient between X and Y. Then correlation co-efficient between X/ 3 and 3Y is
(a) 1 (b) 3r (c) r /3 (d) r
Ans: D
8. If the arithmetic and geometric mean of two numbers are 6.5 and 6.0, respectively, then those two numbers are
(a) 8, 5 (b) 7, 6 (c) 9, 5 (d) 4, 9
Ans: D
9. Which of the following test is used to test the independence of attributes in contingency table ?
(a) Chi-square test (b) t-test (c) f-test (d) z-test
Ans: A
10. For the validity of F-test in ANOVA, which of the following is an important assumption ?
(a) The observations are taken from the normal population.
(b) The observation are mutually independent.
(c) Both (a) and (b)
(d) Neither (a) nor (b)
Ans: C
11. The probability that a leap year should have 53 Fridays is
(a) 1/ 7
(b) 2/ 7
(c) 53/ 365
(d) 53 /366
Ans: B
12. Which of the following is a unit less measure of dispersion ?
A. Standard Deviation
B. Mean Deviation
C. Coefficient of variation
D. Range
Ans: C
13. If X and Y are independent variables then the coefficient of correlation between these will be :
A. Zero
B. One
C. Positive
D. Negative
Ans: A
14. In a scatter diagram all the points lie on a straight line downward from left to right, then there exits:
A. Positive correlation
B. Negative correlation
C. Perfect positive correlation
D. Perfect negative correlation
Ans: D
15. Yate's correction will be applicable in contingency table of order :
A. 2x2
B. 2x3
C. 3x3
D. 4x4
Ans: A
16 Probability of selection varies at each subsequent draw in :
A. Random sampling without replacement
B. Random sampling with replacement
C. Both random sampling without replacement and random sampling with replacement
D. Neither random sampling without replacement nor random sampling with replacement
Ans: A
17 Geometric mean of two observations can be calculated if :
A. Both the observations are positive
B. One of them is positive
C. One of the two observations is zero
D. Both of them are zero
Ans: A
18 which or the following is not true about the geometric mean?
1) geometric mean becomes zero, if any item of the series is zero
2) it becomes meaning less, if certain items are negative in the series.
3) geometric mean is always more than arithmetic mean.
4) it's computation is not easy as that of arithmetic mean.
Ans: C
19 The second central moment about the arithmetic mean is always equal to?
1) variance 2) mean deviation 3) standard deviation 4) none of these
Ans: A
20 The distribution of minimum and maximum observation giving idea of variability is called
1) mean deviation 2) class frequency 3) range dispersion 4) all of these
Ans: C
21. When the two variables are independent, the correlation between them is
1) less than one 2) +1 to -1 3) 0 4) 1
Ans: C
22. Which of the following statement regarding correlation coefficient is true for data set n(x, y)?
1) it remain unaffected by change of scale but changes with change of origin
2) it ranges from -1 to 0
3) correlation coefficient is negative when y decreases with decrease of x throughout the range.
4) none of these
Ans: D
23. If mean is 5 and variance is 9, the coefficient of variation will be
1) 60%
2) 90%
3) 30%
4) 50%
Ans: A
24. To compare the consistency of two players in their previous matches, one should calculate
1) their average runs
2) standard deviation of the runs
3) coefficient of variation of runs
4) the median runs
Ans: C
25. If arithmetic mean is 48 and median is 47, mode value will be
1) 44 2) 45 3) 49 4) 95
Ans: B
26. The harmonic mean of 0,2,4 is
1) 3
2) 0.5
3) 0
4) 2
Ans: C
27. The best average for dealing with the qualitative data is
1) arithmetic mean 2) geometric mean 3) harmonic mean 4) median
Ans: D
28. The value of variable which occurs most frequently is called as-
A) Mean B) Mode C) Median D) Weighted Mean
Ans: B
29. Variance is-
A) The square root of variation of values
B) The coefficient of variation of values
C) The reciprocal of mean of standard deviation
D) The square of standard deviation
Ans: D
30. The average of the absolute deviations taken from centrol value is called as
A) Mean deviation B) Standard deviation C) Coefficient of variation D) Range
Ans: A
31. When value of one variable changes while other variable remains constant, it is known as
A) Negative correlation B) Direct correction C) Positive correction D) Independent
Ans: D
32. If Q1 = 5, Q2 = 10 and Q3 = 20, the quartile deviation will be
A) 15 B) 25 C) 7.5 D) 30
Ans: C
33. Which of the following would you regard as discrete variable
A) Height B) Time C) Wages paid to workers D) Number of children in a family
Ans: 4
34. Which of the following is best to show the percentage of the production of different crops in a location during 2016-2017
A) Histogram B) Ogive curve C) Stem and leaf chart D) Pie chart
Ans: D
35. The mean of 20 observations is 25. What will be the mean of new set of observation, if 3 is added to each observation.
A) 26 B) 28 C) 30 D) 32
Ans: B
36. The coefficient of correlation between X and Y is 0.6, their covariance is 4.8. The variance of X is 9. Then the standard deviation of Y is -
A) 4.8/3*0.6 B) 0.6/4.8*3 C) 4.8*0.6/3 D) 4.8/9*0.6
Ans: A
37. Match the symbols in List-I with words in List-II
List-I List-II
a. –x i. Probability
b. µ ii. Standard deviation of population
c. ρ iii. Standard deviation of sample
d. σ iv. Sample mean v. Population mean
Codes : a b c d
(A) v iv i ii
(B) v iv i iii
(C) iv v i ii
(D) iv v i iii
Ans: C
38. Arrange in order the steps in testing for statistical significance :
a. Interpret the results.
b. Select and compute the test for statistical significance.
c. Select a probability of error level.
d. State the research hypothesis.
e. State the null hypothesis.
Codes : (A) a, c, b, e, d (B) d, c, e, b, a
(C) d, e, c, b, a (D) e, d, c, b, a
Ans: C
39. Assertion (A) : The hypothesis that the researcher puts to test is called null hypothesis.
Reason (R) : The alternate hypothesis is accepted only when null hypothesis is rejected.
Codes :
(A) Both (A) and (R) are true, but (R) is not the correct explanation of (A).
(B) Both (A) and (R) are true, and (R) is the correct explanation of (A).
(C) Both (A) and (R) are false.
(D) (A) is true, but (R) is false.
Ans: A
40. An increase in the alpha, the level of significance, causes
(A) An increase in the probability of Type I error to occur.
(B) A decrease in the probability of Type I error to occur.
(C) No change in any of the Type I or Type II error.
(D) A decrease in the probability of Type I error to occur and an increase in the probability of Type II error to occur.
Ans: A
41. The following assumptions must be fulfilled in the Chi-square test of significance
a. data should be continuous.
b. data has to be in frequencies.
c. all observations should be independent.
d. obtained frequencies are equal in all cells. e. data has to be in ratio scale.
Codes :
(A) a and d
(B) a and c
(C) b and c
(D) c and e
Ans: C
42. The two important values necessary for describing the variation in a series of observations are:
(a) Mean and standard deviation (b) Mean and range (c) Median and range (d) Median and standard deviation
Ans: A
43. In the estimation of statistical probability, Z score is applicable to:
(a) Normal distribution (b) Skewed distribution (c) Binomial distribution (d) Poisson distribution
Ans: A
44. A constant variable can take values:
(A) Zero (B) Fixed
(C) Not fixed (D) Nothing 233. False Positive in a screening test is mostly due to:
(A) High specificity (B) High sensitivity
(C) High prevalence (D) Low prevalence
Ans: A
45. Biostatistics is called as:
(A) Statistics is biology (B) Statistics in vivo
(C) Biometry (D) Both (A) and (B) 235. Number of fruits in a tree is:
(A) Quantitative variable (B) Discrete variable
(C) Absolute variable (D) Continuous variable
Ans: B
46. In Biostatistics group of individuals taken as study is called as:
(A) Block (B) Population
(C) Group (D) Flock
Ans: B
47. Who is regarded as the father of biostatistics:
(A) Fischer (B) Carl Pearson
(C) Francis Galton (D) Francis Bacon
Ans: C
48. Life of a T.V picture tube is a :
(A) Discrete variable (B) Continuous variable
(C) Qualitative variable (D) Constant variable
Ans: B
49. Height of students in a class is a :
(A) Continuous variables (B) Discrete variables
(C) Quantitative variables (D) Absolute variables
Ans: A
50. Colour of flower is a :
(A) Quantitative variables (B) Qualitative variables
(C) Absolute variables (D) Continuous variables
Ans: B
(A) Department of Economics and Statistics at central level.
(B) Department of Economics and Statistics at state level.
A) (A)
B) (B)
C) both (A) and (B)
D) none of these
Ans: C
2. Which statement is not correct:
A) the units of inheritence are genes.
B) a gene's physical location on chromosome is called locus.
C) version of gene at a given locus are called alleles.
D) there is only one possible alleles at each locus.
Ans: D
3. The data refers to the index numbers of Agricultural production with base year as the triennium end given details regarding
A) food grains B) non food grains
C) food grains and non food grains D) none of these
Ans: C
4. Probability of including a specified unit in a sample of size 4 out of 20 units is :
A) 1/5
B) 1/4
C) 1/20
D) 1/80
Ans: A
5. If the probability of occurrence of two independent events A and B respectively are 0.3 and 0.4, then which of the following is true :
A) P (A or B ) = 0.12
B) P (A and B ) = 0.12
C) P (A and B ) = 0.70
D) P (A or B ) = 0.10
Ans: B
6. The arithmetic mean of 5 observations is 5 and range is zero. The standard deviation of these observations is
(a) 0 (b) 1 (c) 2 (d) 3
Ans: A
7. Let ‘r’ be the correlation co-efficient between X and Y. Then correlation co-efficient between X/ 3 and 3Y is
(a) 1 (b) 3r (c) r /3 (d) r
Ans: D
8. If the arithmetic and geometric mean of two numbers are 6.5 and 6.0, respectively, then those two numbers are
(a) 8, 5 (b) 7, 6 (c) 9, 5 (d) 4, 9
Ans: D
9. Which of the following test is used to test the independence of attributes in contingency table ?
(a) Chi-square test (b) t-test (c) f-test (d) z-test
Ans: A
10. For the validity of F-test in ANOVA, which of the following is an important assumption ?
(a) The observations are taken from the normal population.
(b) The observation are mutually independent.
(c) Both (a) and (b)
(d) Neither (a) nor (b)
Ans: C
11. The probability that a leap year should have 53 Fridays is
(a) 1/ 7
(b) 2/ 7
(c) 53/ 365
(d) 53 /366
Ans: B
12. Which of the following is a unit less measure of dispersion ?
A. Standard Deviation
B. Mean Deviation
C. Coefficient of variation
D. Range
Ans: C
13. If X and Y are independent variables then the coefficient of correlation between these will be :
A. Zero
B. One
C. Positive
D. Negative
Ans: A
14. In a scatter diagram all the points lie on a straight line downward from left to right, then there exits:
A. Positive correlation
B. Negative correlation
C. Perfect positive correlation
D. Perfect negative correlation
Ans: D
15. Yate's correction will be applicable in contingency table of order :
A. 2x2
B. 2x3
C. 3x3
D. 4x4
Ans: A
16 Probability of selection varies at each subsequent draw in :
A. Random sampling without replacement
B. Random sampling with replacement
C. Both random sampling without replacement and random sampling with replacement
D. Neither random sampling without replacement nor random sampling with replacement
Ans: A
17 Geometric mean of two observations can be calculated if :
A. Both the observations are positive
B. One of them is positive
C. One of the two observations is zero
D. Both of them are zero
Ans: A
18 which or the following is not true about the geometric mean?
1) geometric mean becomes zero, if any item of the series is zero
2) it becomes meaning less, if certain items are negative in the series.
3) geometric mean is always more than arithmetic mean.
4) it's computation is not easy as that of arithmetic mean.
Ans: C
19 The second central moment about the arithmetic mean is always equal to?
1) variance 2) mean deviation 3) standard deviation 4) none of these
Ans: A
20 The distribution of minimum and maximum observation giving idea of variability is called
1) mean deviation 2) class frequency 3) range dispersion 4) all of these
Ans: C
21. When the two variables are independent, the correlation between them is
1) less than one 2) +1 to -1 3) 0 4) 1
Ans: C
22. Which of the following statement regarding correlation coefficient is true for data set n(x, y)?
1) it remain unaffected by change of scale but changes with change of origin
2) it ranges from -1 to 0
3) correlation coefficient is negative when y decreases with decrease of x throughout the range.
4) none of these
Ans: D
23. If mean is 5 and variance is 9, the coefficient of variation will be
1) 60%
2) 90%
3) 30%
4) 50%
Ans: A
24. To compare the consistency of two players in their previous matches, one should calculate
1) their average runs
2) standard deviation of the runs
3) coefficient of variation of runs
4) the median runs
Ans: C
25. If arithmetic mean is 48 and median is 47, mode value will be
1) 44 2) 45 3) 49 4) 95
Ans: B
26. The harmonic mean of 0,2,4 is
1) 3
2) 0.5
3) 0
4) 2
Ans: C
27. The best average for dealing with the qualitative data is
1) arithmetic mean 2) geometric mean 3) harmonic mean 4) median
Ans: D
28. The value of variable which occurs most frequently is called as-
A) Mean B) Mode C) Median D) Weighted Mean
Ans: B
29. Variance is-
A) The square root of variation of values
B) The coefficient of variation of values
C) The reciprocal of mean of standard deviation
D) The square of standard deviation
Ans: D
30. The average of the absolute deviations taken from centrol value is called as
A) Mean deviation B) Standard deviation C) Coefficient of variation D) Range
Ans: A
31. When value of one variable changes while other variable remains constant, it is known as
A) Negative correlation B) Direct correction C) Positive correction D) Independent
Ans: D
32. If Q1 = 5, Q2 = 10 and Q3 = 20, the quartile deviation will be
A) 15 B) 25 C) 7.5 D) 30
Ans: C
33. Which of the following would you regard as discrete variable
A) Height B) Time C) Wages paid to workers D) Number of children in a family
Ans: 4
34. Which of the following is best to show the percentage of the production of different crops in a location during 2016-2017
A) Histogram B) Ogive curve C) Stem and leaf chart D) Pie chart
Ans: D
35. The mean of 20 observations is 25. What will be the mean of new set of observation, if 3 is added to each observation.
A) 26 B) 28 C) 30 D) 32
Ans: B
36. The coefficient of correlation between X and Y is 0.6, their covariance is 4.8. The variance of X is 9. Then the standard deviation of Y is -
A) 4.8/3*0.6 B) 0.6/4.8*3 C) 4.8*0.6/3 D) 4.8/9*0.6
Ans: A
37. Match the symbols in List-I with words in List-II
List-I List-II
a. –x i. Probability
b. µ ii. Standard deviation of population
c. ρ iii. Standard deviation of sample
d. σ iv. Sample mean v. Population mean
Codes : a b c d
(A) v iv i ii
(B) v iv i iii
(C) iv v i ii
(D) iv v i iii
Ans: C
38. Arrange in order the steps in testing for statistical significance :
a. Interpret the results.
b. Select and compute the test for statistical significance.
c. Select a probability of error level.
d. State the research hypothesis.
e. State the null hypothesis.
Codes : (A) a, c, b, e, d (B) d, c, e, b, a
(C) d, e, c, b, a (D) e, d, c, b, a
Ans: C
39. Assertion (A) : The hypothesis that the researcher puts to test is called null hypothesis.
Reason (R) : The alternate hypothesis is accepted only when null hypothesis is rejected.
Codes :
(A) Both (A) and (R) are true, but (R) is not the correct explanation of (A).
(B) Both (A) and (R) are true, and (R) is the correct explanation of (A).
(C) Both (A) and (R) are false.
(D) (A) is true, but (R) is false.
Ans: A
40. An increase in the alpha, the level of significance, causes
(A) An increase in the probability of Type I error to occur.
(B) A decrease in the probability of Type I error to occur.
(C) No change in any of the Type I or Type II error.
(D) A decrease in the probability of Type I error to occur and an increase in the probability of Type II error to occur.
Ans: A
41. The following assumptions must be fulfilled in the Chi-square test of significance
a. data should be continuous.
b. data has to be in frequencies.
c. all observations should be independent.
d. obtained frequencies are equal in all cells. e. data has to be in ratio scale.
Codes :
(A) a and d
(B) a and c
(C) b and c
(D) c and e
Ans: C
42. The two important values necessary for describing the variation in a series of observations are:
(a) Mean and standard deviation (b) Mean and range (c) Median and range (d) Median and standard deviation
Ans: A
43. In the estimation of statistical probability, Z score is applicable to:
(a) Normal distribution (b) Skewed distribution (c) Binomial distribution (d) Poisson distribution
Ans: A
44. A constant variable can take values:
(A) Zero (B) Fixed
(C) Not fixed (D) Nothing 233. False Positive in a screening test is mostly due to:
(A) High specificity (B) High sensitivity
(C) High prevalence (D) Low prevalence
Ans: A
45. Biostatistics is called as:
(A) Statistics is biology (B) Statistics in vivo
(C) Biometry (D) Both (A) and (B) 235. Number of fruits in a tree is:
(A) Quantitative variable (B) Discrete variable
(C) Absolute variable (D) Continuous variable
Ans: B
46. In Biostatistics group of individuals taken as study is called as:
(A) Block (B) Population
(C) Group (D) Flock
Ans: B
47. Who is regarded as the father of biostatistics:
(A) Fischer (B) Carl Pearson
(C) Francis Galton (D) Francis Bacon
Ans: C
48. Life of a T.V picture tube is a :
(A) Discrete variable (B) Continuous variable
(C) Qualitative variable (D) Constant variable
Ans: B
49. Height of students in a class is a :
(A) Continuous variables (B) Discrete variables
(C) Quantitative variables (D) Absolute variables
Ans: A
50. Colour of flower is a :
(A) Quantitative variables (B) Qualitative variables
(C) Absolute variables (D) Continuous variables
Ans: B
51. In a group of 457 patients, for a risk factor we calculated a Relative Risk RR= 12.74, the possibility of developing the disease being investigated is :
(A) Very small when exposed to the factor
(B) Very high when exposed to the factor
(C) The same in the case of exposure in the case of non-exposure
(D) Lower in the exposed than in the unexposed, RR being less than 100
Ans: B
52. If, after performing a student test for comparison of means, we obtain p=0.0256, then:
(A) We reject H1 (B) We accept H0 and accept H1
(C) We accept H0 (D) We cannot decide
Ans: B
53. When the variables follow standard distribution:
(A) Median = Variance (B) Mean= Median
(C) Mean = 2 Median (D) Standard deviation = 2Variance
Ans: B
54. Odds ratio is related to:
(A) Relative risk (B) Incidence
(C) Prevalence (D) Attributable risk
Ans: A
55. A clinical trial is more valuable when:
(A) Sensitivity is higher than specificity
(B) Specificity is higher than sensitivity
(C) Sensitivity and specificity have higher values
(D) The sensitivity and specificity values are close, even equal, regardless of their values
Ans: C
56. The median of a series of numerical values is:
(A) A number (B) A graph or hart
(C) Equal to the average (D) A frequency table
Ans: A
57. The stages of a malignant disease (cancer) is recorded using the symbols 0, I, II, III, IV. We say that the scale used is:
(A) Numerical (B) Ordinal
(C) Nominal (D) Alpha numeric
Ans: B
58. Chi square is 0 when:
(A) Expected frequency is lesser than the observed frequency
(B) Expected frequency is equal to the observed frequency
(C) Expected frequency is double that of the observed frequency
(D) Expected frequency is greater is greater than the observed frequency.
Ans: B
59. The statistical test can be utilized to validate the statement ‘people having high cholesterol suffer more from hypertension’:
(A) Student test (B) Regression analysis
(C) Pearson correlation coefficient (D) ANOVA
Ans: C
60. The haemoglobin level in healthy women has mean 13.5g/dl and standard deviation 1.5g/dl, what is the Z score for a woman with Hb level 15.0g/dl?
(A) 9.0 (B) 10.0
(C) 2.0 (D) 1.0 231.
For a negatively skewed data, mean will be:
(A) Less than median (B) More than median
(C) Equal to median (D) One
Ans: D
61. The type of statistics used in collecting demographic data is known as
(A) Health statistics (B) Vital statistics (C) Medical Statistics (D) Population census
Ans: B
62. Biostatistics as a science of figures tell everything except:
(A) leading causes of death (B) the levels or standards of health reached
(C) Important causes of sickness (D) prognosis of mortality of a defined disease
Ans: D
63. A set of values recorded on one or more observational units is called as:
(A) Variable (B) Data (C) Observation (D) Sample
Ans: B
64. Test in which data do not follow any specific distribution & no assumptions is known as:
(A) Parametric test (B) Non-parametric test (C) Student ‘t’ test (D) ‘Z’ test
Ans: B
65. Which of the following is not a source of data collection?
(A) Experiments (B) Telephonic conversation (C) Surveys (D) Records
Ans: B
66. The quantitative data can be presented as all except:
(A) Histogram (B) Gantt chart (C) Frequency curve (D) Scatter diagram
Ans: B
67. Which of the following Sampling technique is employed in large country surveys?
(A) Stratified sampling (B) Cluster sampling (C) Multistage sampling (D) Systematic sampling
Ans: C
68. Nested case control study is a type of
(A) Retrospective study (B) Prospective study (C) Descriptive study (D) Cross-sectional study
Ans: B
69. Case control study is a type of:
(A) Descriptive epidemiological study (B) Analytical study (C) Longitudinal study (D) Experimental epidemiological study
Ans: B
70. Which is not an analytical observational study?
(A) Case control study (B) Cohort study (C) Ecological study (D) Field trials
Ans: D
71. Which of the following statements is not true about ‘Cohort” study?
(A) Provides incidence of disease (B) Indicated when there is good evidence of association between exposure & disease
(C) Done when incidence of disease is very low among exposed (D) Done when ample funds are available
Ans: C
72. Which of the following is false about ‘Odds’ ratio?
(A) it is always positive (B) It can be 0.3 (C) It can be 3.0 (D) It is always > I
Ans: D
73. An Odds ratio =1 indicates that the association between the two factors is:
(A) is perfect (B) is low (C) is high (D) does not exist
Ans: D
74. All of the following are true about cross-sectional study except:
(A) Also called prevalence study (B) Tells etiology (C) Shows pattern of the disease (D) Tells prevalence
Ans: B
75. Which of the following is not the role of statistics in research?
(A) In understanding the relation between the variables
(B) Helps in understanding the strength of relationship between the variables
(C) help in understanding the interdependence between two variables & their contribution to a phenomenon or an event
(D) Helps in qualifying, judge & assess the data
Ans: D
76. Which of the following is not statistical software used for statistical analysis?
(A) MINITAB
(B) PASS
(C) SPSS
(D) SAS
Ans: B
77. The parameter that measures the extent or degree of relationship between two sets of figures is denoted by:
(A) ‘t’ (B) ‘r’ (C) ‘p’ (D) ‘x’
Ans: B
78. Change in the measurements of a variable character, on the positive or negative side beyond the mean is called as:
(A) Regression (B) Correlation (C) Bivariate correlation (D) Geometrical progression
Ans: A
79. The test which is not confined to comparing two sample means but more than two samples drawn from corresponding normal populations is called as:
(A) Two tailed test (B) ANOVA
(C) Variance ratio test (D) Paired t- test
Ans: B
80. The formula for calculating CFR or Case Fatality Rate is:
(A) CFR = No. of deaths due to particular disease / No. of cases of the same disease x 100
(B) CPR = No. of cases of the same disease / No. of deaths due to particular disease x 100
(C) CFR = No. of deaths of the same disease / No. of cases due to particular disease x 100
(D) No. of cases dying of a particular disease in a week / No. of deaths of same disease in a year x 100
Ans: A
81. Which of the following tests is applied to find out the significance of difference between two means?
(A) ‘t’ test (B) chi square test (C) two-tailed test (D) ‘Z’ test
Ans: A
82. The quantity in the denominator which is one less than the independent number of observations in a sample is called:
(A) level of significance (B) degrees of freedom (C) measure of dispersion (D) measure of central tendency
Ans: B
83. The most frequently occurring observation in series is called:
(A) mean (B) median (C) mode (D) weighted mean
Ans: C
84. The other name for scatter diagram is:
(A) Correlation diagram (B) Ogive (C) Line diagram (D) Line chart
Ans: A
85. Which is a better indicator of central value when one or more of the lowest or the highest observations are wide apart
(A) Mean (B) Median (C) Mode (D) All the above
Ans: B
86. Following are the characteristics of normal curve except
(A) It is bell shaped
(B) It has two inflections; the central part is convex while at the points of inflection, the curve changes from convexity to concavity
(C) It is asymmetrical
(D) Mean, median and mode coincide
Ans: C
87. If the hypothesis H0 is true, still it is rejected, though the estimate falls in acceptance zone at 5% level in plain area, it is known as:
(A) Type I error (B) Type II error (C) Type III error (D) None of the above
Ans: A
88. When the two variables X and Y are inversely proportional to each other, the correlation coefficient (r) is equal to
(A) + 1
(B) – 1
(C) Between 0 and + 1
(D) Between 0 and – 1
Ans: B
89. The scale which consists of number of statements, which express either a favorable or unfavorable attitudes towards a given object to which the respondent is asked to react. Each response is given a numerical score and the scores are totaled to measure the respondents attitude, is
(A) Cummilative scale (B) Likert scale (C) Guttmans scale (D) Factor scale
Ans: B
90. A group small or large, living together in such a way that the members share not one or more specific interests but rather the basic conditions of a common life is:
(A) Association (B) Community (C) Social Institution (D) Sociology
Ans: B
91:-Research studies with an objective to portray accurately the characteristics of a particular individual, situation or group is known as
A:-Exploratory Research B:-Descriptive Research C:-Diagnostic Research D:-Hypothesis Testing Research
Ans: B
92:-Systematic Sampling is a method of
A:-Judgement Sampling B:-Non-random Sampling C:-Probability Sampling D:-None of these
Ans: C
93:-The basic principles of Experimental Research Designs are enumerated by
A:-R.A. Fisher B:-Spencer and Seligman C:-Horace secrist D:-Thomas Bayes
Ans: A
94:-Interval scales have the mathematical properties of
A:-Order only B:-Order and Distance only C:-Order, Distance and Absolute zero D:-None of the above
Ans: B
95:-Observation Method is a method of collecting
A:-Primary Data B:-Secondary Data C:-Time Series Data D:-Panel Data
Ans: A
96:-Standard Error is
A:-Sampling Error B:-Standard Deviation C:-Average D:-None of the above
Ans: B
97:-What are the sampling groups which are very similar within but dissimilar without are called?
A:-Cluster B:-Stratified C:-Systematic D:-Random
Ans: B
98:-Which of the following measures of dispersion is least affected by extreme values of observations in a data set?
A:-Mean absolute deviation B:-Range
C:-Quartile deviation D:-Standard Deviation
Ans: A
99:-The interval between the upper quartile and the lower quartile is known as
A:-Mean B:-Interquartile range C:-Standard deviation D:-Mode
Ans: B
100:-The result of discarding extreme values before averaging is called
A:-Residual mean B:-Extreme mean C:-Modified mean D:-None of these
Ans: C
(A) Very small when exposed to the factor
(B) Very high when exposed to the factor
(C) The same in the case of exposure in the case of non-exposure
(D) Lower in the exposed than in the unexposed, RR being less than 100
Ans: B
52. If, after performing a student test for comparison of means, we obtain p=0.0256, then:
(A) We reject H1 (B) We accept H0 and accept H1
(C) We accept H0 (D) We cannot decide
Ans: B
53. When the variables follow standard distribution:
(A) Median = Variance (B) Mean= Median
(C) Mean = 2 Median (D) Standard deviation = 2Variance
Ans: B
54. Odds ratio is related to:
(A) Relative risk (B) Incidence
(C) Prevalence (D) Attributable risk
Ans: A
55. A clinical trial is more valuable when:
(A) Sensitivity is higher than specificity
(B) Specificity is higher than sensitivity
(C) Sensitivity and specificity have higher values
(D) The sensitivity and specificity values are close, even equal, regardless of their values
Ans: C
56. The median of a series of numerical values is:
(A) A number (B) A graph or hart
(C) Equal to the average (D) A frequency table
Ans: A
57. The stages of a malignant disease (cancer) is recorded using the symbols 0, I, II, III, IV. We say that the scale used is:
(A) Numerical (B) Ordinal
(C) Nominal (D) Alpha numeric
Ans: B
58. Chi square is 0 when:
(A) Expected frequency is lesser than the observed frequency
(B) Expected frequency is equal to the observed frequency
(C) Expected frequency is double that of the observed frequency
(D) Expected frequency is greater is greater than the observed frequency.
Ans: B
59. The statistical test can be utilized to validate the statement ‘people having high cholesterol suffer more from hypertension’:
(A) Student test (B) Regression analysis
(C) Pearson correlation coefficient (D) ANOVA
Ans: C
60. The haemoglobin level in healthy women has mean 13.5g/dl and standard deviation 1.5g/dl, what is the Z score for a woman with Hb level 15.0g/dl?
(A) 9.0 (B) 10.0
(C) 2.0 (D) 1.0 231.
For a negatively skewed data, mean will be:
(A) Less than median (B) More than median
(C) Equal to median (D) One
Ans: D
61. The type of statistics used in collecting demographic data is known as
(A) Health statistics (B) Vital statistics (C) Medical Statistics (D) Population census
Ans: B
62. Biostatistics as a science of figures tell everything except:
(A) leading causes of death (B) the levels or standards of health reached
(C) Important causes of sickness (D) prognosis of mortality of a defined disease
Ans: D
63. A set of values recorded on one or more observational units is called as:
(A) Variable (B) Data (C) Observation (D) Sample
Ans: B
64. Test in which data do not follow any specific distribution & no assumptions is known as:
(A) Parametric test (B) Non-parametric test (C) Student ‘t’ test (D) ‘Z’ test
Ans: B
65. Which of the following is not a source of data collection?
(A) Experiments (B) Telephonic conversation (C) Surveys (D) Records
Ans: B
66. The quantitative data can be presented as all except:
(A) Histogram (B) Gantt chart (C) Frequency curve (D) Scatter diagram
Ans: B
67. Which of the following Sampling technique is employed in large country surveys?
(A) Stratified sampling (B) Cluster sampling (C) Multistage sampling (D) Systematic sampling
Ans: C
68. Nested case control study is a type of
(A) Retrospective study (B) Prospective study (C) Descriptive study (D) Cross-sectional study
Ans: B
69. Case control study is a type of:
(A) Descriptive epidemiological study (B) Analytical study (C) Longitudinal study (D) Experimental epidemiological study
Ans: B
70. Which is not an analytical observational study?
(A) Case control study (B) Cohort study (C) Ecological study (D) Field trials
Ans: D
71. Which of the following statements is not true about ‘Cohort” study?
(A) Provides incidence of disease (B) Indicated when there is good evidence of association between exposure & disease
(C) Done when incidence of disease is very low among exposed (D) Done when ample funds are available
Ans: C
72. Which of the following is false about ‘Odds’ ratio?
(A) it is always positive (B) It can be 0.3 (C) It can be 3.0 (D) It is always > I
Ans: D
73. An Odds ratio =1 indicates that the association between the two factors is:
(A) is perfect (B) is low (C) is high (D) does not exist
Ans: D
74. All of the following are true about cross-sectional study except:
(A) Also called prevalence study (B) Tells etiology (C) Shows pattern of the disease (D) Tells prevalence
Ans: B
75. Which of the following is not the role of statistics in research?
(A) In understanding the relation between the variables
(B) Helps in understanding the strength of relationship between the variables
(C) help in understanding the interdependence between two variables & their contribution to a phenomenon or an event
(D) Helps in qualifying, judge & assess the data
Ans: D
76. Which of the following is not statistical software used for statistical analysis?
(A) MINITAB
(B) PASS
(C) SPSS
(D) SAS
Ans: B
77. The parameter that measures the extent or degree of relationship between two sets of figures is denoted by:
(A) ‘t’ (B) ‘r’ (C) ‘p’ (D) ‘x’
Ans: B
78. Change in the measurements of a variable character, on the positive or negative side beyond the mean is called as:
(A) Regression (B) Correlation (C) Bivariate correlation (D) Geometrical progression
Ans: A
79. The test which is not confined to comparing two sample means but more than two samples drawn from corresponding normal populations is called as:
(A) Two tailed test (B) ANOVA
(C) Variance ratio test (D) Paired t- test
Ans: B
80. The formula for calculating CFR or Case Fatality Rate is:
(A) CFR = No. of deaths due to particular disease / No. of cases of the same disease x 100
(B) CPR = No. of cases of the same disease / No. of deaths due to particular disease x 100
(C) CFR = No. of deaths of the same disease / No. of cases due to particular disease x 100
(D) No. of cases dying of a particular disease in a week / No. of deaths of same disease in a year x 100
Ans: A
81. Which of the following tests is applied to find out the significance of difference between two means?
(A) ‘t’ test (B) chi square test (C) two-tailed test (D) ‘Z’ test
Ans: A
82. The quantity in the denominator which is one less than the independent number of observations in a sample is called:
(A) level of significance (B) degrees of freedom (C) measure of dispersion (D) measure of central tendency
Ans: B
83. The most frequently occurring observation in series is called:
(A) mean (B) median (C) mode (D) weighted mean
Ans: C
84. The other name for scatter diagram is:
(A) Correlation diagram (B) Ogive (C) Line diagram (D) Line chart
Ans: A
85. Which is a better indicator of central value when one or more of the lowest or the highest observations are wide apart
(A) Mean (B) Median (C) Mode (D) All the above
Ans: B
86. Following are the characteristics of normal curve except
(A) It is bell shaped
(B) It has two inflections; the central part is convex while at the points of inflection, the curve changes from convexity to concavity
(C) It is asymmetrical
(D) Mean, median and mode coincide
Ans: C
87. If the hypothesis H0 is true, still it is rejected, though the estimate falls in acceptance zone at 5% level in plain area, it is known as:
(A) Type I error (B) Type II error (C) Type III error (D) None of the above
Ans: A
88. When the two variables X and Y are inversely proportional to each other, the correlation coefficient (r) is equal to
(A) + 1
(B) – 1
(C) Between 0 and + 1
(D) Between 0 and – 1
Ans: B
89. The scale which consists of number of statements, which express either a favorable or unfavorable attitudes towards a given object to which the respondent is asked to react. Each response is given a numerical score and the scores are totaled to measure the respondents attitude, is
(A) Cummilative scale (B) Likert scale (C) Guttmans scale (D) Factor scale
Ans: B
90. A group small or large, living together in such a way that the members share not one or more specific interests but rather the basic conditions of a common life is:
(A) Association (B) Community (C) Social Institution (D) Sociology
Ans: B
91:-Research studies with an objective to portray accurately the characteristics of a particular individual, situation or group is known as
A:-Exploratory Research B:-Descriptive Research C:-Diagnostic Research D:-Hypothesis Testing Research
Ans: B
92:-Systematic Sampling is a method of
A:-Judgement Sampling B:-Non-random Sampling C:-Probability Sampling D:-None of these
Ans: C
93:-The basic principles of Experimental Research Designs are enumerated by
A:-R.A. Fisher B:-Spencer and Seligman C:-Horace secrist D:-Thomas Bayes
Ans: A
94:-Interval scales have the mathematical properties of
A:-Order only B:-Order and Distance only C:-Order, Distance and Absolute zero D:-None of the above
Ans: B
95:-Observation Method is a method of collecting
A:-Primary Data B:-Secondary Data C:-Time Series Data D:-Panel Data
Ans: A
96:-Standard Error is
A:-Sampling Error B:-Standard Deviation C:-Average D:-None of the above
Ans: B
97:-What are the sampling groups which are very similar within but dissimilar without are called?
A:-Cluster B:-Stratified C:-Systematic D:-Random
Ans: B
98:-Which of the following measures of dispersion is least affected by extreme values of observations in a data set?
A:-Mean absolute deviation B:-Range
C:-Quartile deviation D:-Standard Deviation
Ans: A
99:-The interval between the upper quartile and the lower quartile is known as
A:-Mean B:-Interquartile range C:-Standard deviation D:-Mode
Ans: B
100:-The result of discarding extreme values before averaging is called
A:-Residual mean B:-Extreme mean C:-Modified mean D:-None of these
Ans: C