Exam Details
Subject | statistics | |
Paper | ||
Exam / Course | combined competitive examination | |
Department | ||
Organization | Jammu Kashmir Public Service Commission | |
Position | ||
Exam Date | 2012 | |
City, State | jammu kashmir, |
Question Paper
1. The axiomatic definition of probability was proposed by
R.A. Fisher
Bernoulli
Kolmogorov
Gauss
2. If B A then it is true that
P P
P P
P P
P 0
3. When three symmetric dice are rolled at a time the chance of getting a sum of the number shown up as 12 will be
8
25/216
1/12
8/216
4. The probability of an impossible event is
1/2
1
0
0.9973
5. The probability obtained by Bayes theorem is
Apriori probability
Absolute probability
Conditional probability
Posterior probability
6. If is a Probability Distribution Function then is
0
1/2
1
7. If X is a continuous random variable then P(X
1
0
0.5
Any value between 0 and 1
8. In the usual notation is called
Conditional density
Marginal density
Joint density
Cumulative density
9. If C K are constants then V(CX
K
C2V(X)
0
10. The moment generating function of X is equal to
E(eitx)
E(etx)
E(e itx)
tx
11. The product moment of X and Y is given by
12. If A and B are any two events and 2/5 and P(AuB) then P(A BC is
1/10
4/5
3/10
3/5
13. In the usual notation, P(X for Binomial Distribution is
p)n
pn
1
p(1
14. The coefficient of variation of Poisson Distribution with mean will be
2
1
2
15. If X and Y follows Poisson Distribution with means m1 and m2 then the distribution of Y)is
Poisson with mean (m1 m2)
Poisson with mean (m1 m2)
Poisson with mean (m1m2)
Not Poisson at all
16. A discrete distribution having memoryless property is
Binomial
Hypergeometric
Geometric
Negative Binomial
17. The MGF of Poisson distribution with parameter λ is
eλt 1
eλ(et
eλ(eit
eiλ(et
18. The variance of continuous uniform distribution between 0 b is
b2/2
b/6
b2/6
b2/12
19. If an exponential distribution has mean its variance is
4
1/2
2
2
20. The number of failures before the rth success in a series of independent Bernoulli trials follows
Binomial
Negative Binomial
Geometric
Uniform
21. In the usual notation Gamma is equal to
1
0
22. In a normal distribution the area covered between mean and 2 S.Ds. is
99.73%
95%
64.5%
50%
23. The distribution of the sum of n-independent exponential variates will be
Gamma
Exponential
Normal
Beta
24. The number of parameters in Bivariate normal is
4
6
5
2
25. The limiting distribution used in Central Limit Theorem is
Beta
Normal
Gamma
Cauchy
26. Classification of data according to time becomes
Qualitative
Quantitative
Geographical
Chronological
27. A class frequency divided by total frequency becomes
Relative frequency
Frequency density
Cumulative frequency
Conditional frequency
28. One of the following diagrams is suitable for presenting percentage share of components
Bar chart
Pie chart
Line chart
Histogram
29. Cumulative frequencies are necessary to draw
Histogram
Ogive
Line chart
Scatter diagram
30. The AM of the values 1}is
6
1.5
0
2
31. In the usual notation the Harmonic Mean is given by
Σf Σ (xi fi
Σ (fi xi Σf i
Σ fi/Σ (fi xi
Σ fi xi/ Σ fi
32. The standard deviation of is
2
2
0
4
33. The percentage of data values above the third quartile is
25%
50%
75%
100%
34. For a symmetric distribution, the skewness coefficient is
1
3
0
35. If the coefficient of Kurtosis is negative, then the distribution is
Leptokurtic
Platykurtic
Mesokurtic
Any of these
36. The chart used to understand the nature of correlation is
Pie chart
Ogive
Scatter chart
Line chart
37. One of the following is only true about correlation coefficient
r 1
r 1
1 r 1
r 0
38. If r 0.90 then the coefficient determination is
root 0.90
(0.90)2
1/0.90
1 (0.90)
39. In the usual notation the relationship between the regression coefficients and correlation coefficient is
r
r ± root bxy byx
r ± root bxy/ byx
40. The coefficient of association between two independent attributes is equal to
1
1
0
0.50
41. If X σ2) the standard error of X =Σx n is
σ2/n
σ2/root n
σ/root n
σ
42. Test for goodness of fit is based on
t Distribution
Normal Distribution
Chi-square distribution
F-Distribution
43. For a paired t-test of means with a sample of 20, the degrees of freedom are
18
19
20
None of these
44. Student's t-test was proposed by
R.A. Fisher
Suedecur
Cochran
Gosset
45. The value of skewness for student's t-distribution is
1
1
0
46. For large degrees of freedom the t-distribution tends to
Normal
Chi-square
Log Normal
None of these
47. The relationship between t and F statistics is
t F/2
t2 F
t2 F
t 1/F
48. For a × contingency table the degrees of freedom for chi-square test of independence, are
12
9
8
6
49. In ANOVA the null hypothesis relates to the comparison of
Means
Variances
Proportion
Standard deviations
50. One of the following is not an order statistic
Maximum
Mean
Minimum
Median
51. Any statistical test is said to be unbiased if for that test
Power Size 0
Power Size 0
Power Size
Power Size
52. If X σ2) and x is the sample size then a sufficient statistic for x¯ is
(xn xi)
Σxi
Σ(xi x¯
None of these
53. If tn is an estimator of then Cramer-Rao's inequality provides a lower bound on
Max(tn)
Min(tn)
54. For an unbiased estimator tn, if →0 as n it is called
Efficient
Sufficient
Consistent
All these
55. Rao-Blackwell theorem deals with
Ratio estimation
Level of significance
Sufficient Statistic
Confidence intervals
56. Let X be a standard Normal random variable and Y is a Chi-square random variable with 3 degrees of freedom. Assuming that random variables X and Y are independently distributed, then distribution of X/root Y/3 is
Chi-square distribution
Cauchy distribution
t distribution
Normal distribution
57. BLUE stands for
Best Linear Uniform Estimator
Best likelihood Unbiased Estimator
Bayes Linear Unbiased Estimator
Best Linear Unbiased Estimator
58. If V1 is the variance of the most efficient estimator T1 and V2 is the variance of any other estimate T2, then the efficiency T2 is given by
V1/V2
V2/V1
V1 V2
V2 V1
59. MLE of θ when a sample of observations is drawn from the population having pdf f θe xθ x 0 is
x
s2
(s2
60. Number of conditions for mutual independence of n events are
2n
2n n 1
3n
3n n
61. If x is the mean of Binomial Distribution B then it is
Sufficient statistic for p
Efficient estimator of p
Both and
Neither nor
62. The hypothesis H1 is
Right sided
Left sided
Two-sided
Any of these
63. The set of values of the test statistic, which support the rejection of Null Hypothesis is called
Power
LOS
Critical region
Confidence Interval
64. The probability of committing type II Error is denoted by
α
1 α
1 β
β
65. In the usual notation the one-sample t-test is based on
x σ/root n
x s root n
x σ root n
66. For large samples the test for comparing two proportions is based on distribution.
Poisson
Binomial
Standard Normal
t
67. For any one-sided Z-test the critical value at level of significance is equal to
1.28
2.33
1.96
1.645
68. The test for comparing two variances for equality is based on
χ2-Distribution
F-Distribution
Normal Distribution
t-Distribution
69. For a two sample t-test for means with n1 12 and n2 the degrees of freedom are
12
10
20
21
70. The size of the critical region is known as
Power of test
Critical value
Level of significance
Test range
71. For large the mean of Wilcoxon's Signed Rank test is
n(n
n(n
n(2n
n(n
72. The number of runs in the sequence FFFMMM is
6
1
2
Can't say
73. Wilcoxon test is considered as analogous to
One-sample t-test
Two-sample t-test
Two-sample F-test
Goodness of fit test
74. The mean of number of runs U in run test is given by
N
N/2
75. The non-parametric test for goodness of fit of a distribution is
Run test
Kolmogorov-Smimov test
U-test
Sign test
76. Prestige bias and self interest of respondent leads to
Response error
Non-response error
Grouping error
Standard error
77. Simple Random Sampling is applicable when the population units are
Clustered
Homogeneous
Heterogeneous
Few in number
78. Consider a sample of drawn from a population of size by simple random sampling. Then, the probability of drawing a specified unit of the population is
1/n
1/N
n/N
N/n
79. In the context of sampling the fraction n/N is called
Sampling fraction
Sampling frame
Sampling ratio
None of these
80. Number of total samples of size n which can be drawn from a population of size N under simple random sampling with replacement is
n/N
N n
n N
81. The unbiased estimator of population mean Y¯ under stratified sampling is
Σ Nh yh/N
Σ Nh Yh/N
Σ nh yh
Σ nh yh/n
82. In the usual notation one of the following is only true
VSRS VPROP VOPT
VOPT VPROP VSRS
VSRS VOPT VPROP
None of the above
83. In the usual notation the finite population correction is
N − n
84. With SRSWOR from a finite population of size the variance of proportion is
85. In systematic sampling with k k is called
Sampling interval
Sampling frame
Sampling size
Sampling ratio
86. In a two way analysis of variance with 4 treatments, 5 blocks and 3 observations per cell, the error degrees of freedom are
38
39
40
41
87. A necessary condition for a symmetrical BIBD, assuming the number of treatments as even, is that λ) must be
Perfect Square
Infinite
Positive Integer
Negative Integer
88. The first census in India was held in
1827
1872
1892
1897
89. In the context of census 2010, NPR stands for
New Population Register
National Population Register
National People Register
New Population Rolls
90. The statistical test used to compare the means of three or more independent groups is
Z-test
Paired t-test
ANOVA
Run Test
91. In 33 design the error degrees of freedom with 5 replicates are
108
106
104
102
92. The principle used to estimate experimental error is
Local control
Randomization
Replication
Blocking
93. Two way ANOVA is used in the analysis of
RBD
CRD
LSD
All these
94. In the usual notation the expression for the missing value in a m × m LSD is
95. In the ascending order of efficiency, the following order of basic designs is true
CRD, LSD, RBD
CRD, RBD, LSD
RBD, CRD, LSD
RBD, LSD, CRD
96. The error degrees of freedom in a 2n factorial with r-replicates are
r 2n
(2n
(2n
97. In the usual notation interaction AB in 22 factorial design is given by:
98. In a 23 design when ABC interaction is confounded, each block contains treatment combinations.
8
2
4
3
99. A BIBD is said to be symmetric if
b V and r K
b V and r K
b V and r K
b V and r K
100. In a symmetric BIBD the number of treatments common to any two blocks is
λ2
λ
λ/V
R.A. Fisher
Bernoulli
Kolmogorov
Gauss
2. If B A then it is true that
P P
P P
P P
P 0
3. When three symmetric dice are rolled at a time the chance of getting a sum of the number shown up as 12 will be
8
25/216
1/12
8/216
4. The probability of an impossible event is
1/2
1
0
0.9973
5. The probability obtained by Bayes theorem is
Apriori probability
Absolute probability
Conditional probability
Posterior probability
6. If is a Probability Distribution Function then is
0
1/2
1
7. If X is a continuous random variable then P(X
1
0
0.5
Any value between 0 and 1
8. In the usual notation is called
Conditional density
Marginal density
Joint density
Cumulative density
9. If C K are constants then V(CX
K
C2V(X)
0
10. The moment generating function of X is equal to
E(eitx)
E(etx)
E(e itx)
tx
11. The product moment of X and Y is given by
12. If A and B are any two events and 2/5 and P(AuB) then P(A BC is
1/10
4/5
3/10
3/5
13. In the usual notation, P(X for Binomial Distribution is
p)n
pn
1
p(1
14. The coefficient of variation of Poisson Distribution with mean will be
2
1
2
15. If X and Y follows Poisson Distribution with means m1 and m2 then the distribution of Y)is
Poisson with mean (m1 m2)
Poisson with mean (m1 m2)
Poisson with mean (m1m2)
Not Poisson at all
16. A discrete distribution having memoryless property is
Binomial
Hypergeometric
Geometric
Negative Binomial
17. The MGF of Poisson distribution with parameter λ is
eλt 1
eλ(et
eλ(eit
eiλ(et
18. The variance of continuous uniform distribution between 0 b is
b2/2
b/6
b2/6
b2/12
19. If an exponential distribution has mean its variance is
4
1/2
2
2
20. The number of failures before the rth success in a series of independent Bernoulli trials follows
Binomial
Negative Binomial
Geometric
Uniform
21. In the usual notation Gamma is equal to
1
0
22. In a normal distribution the area covered between mean and 2 S.Ds. is
99.73%
95%
64.5%
50%
23. The distribution of the sum of n-independent exponential variates will be
Gamma
Exponential
Normal
Beta
24. The number of parameters in Bivariate normal is
4
6
5
2
25. The limiting distribution used in Central Limit Theorem is
Beta
Normal
Gamma
Cauchy
26. Classification of data according to time becomes
Qualitative
Quantitative
Geographical
Chronological
27. A class frequency divided by total frequency becomes
Relative frequency
Frequency density
Cumulative frequency
Conditional frequency
28. One of the following diagrams is suitable for presenting percentage share of components
Bar chart
Pie chart
Line chart
Histogram
29. Cumulative frequencies are necessary to draw
Histogram
Ogive
Line chart
Scatter diagram
30. The AM of the values 1}is
6
1.5
0
2
31. In the usual notation the Harmonic Mean is given by
Σf Σ (xi fi
Σ (fi xi Σf i
Σ fi/Σ (fi xi
Σ fi xi/ Σ fi
32. The standard deviation of is
2
2
0
4
33. The percentage of data values above the third quartile is
25%
50%
75%
100%
34. For a symmetric distribution, the skewness coefficient is
1
3
0
35. If the coefficient of Kurtosis is negative, then the distribution is
Leptokurtic
Platykurtic
Mesokurtic
Any of these
36. The chart used to understand the nature of correlation is
Pie chart
Ogive
Scatter chart
Line chart
37. One of the following is only true about correlation coefficient
r 1
r 1
1 r 1
r 0
38. If r 0.90 then the coefficient determination is
root 0.90
(0.90)2
1/0.90
1 (0.90)
39. In the usual notation the relationship between the regression coefficients and correlation coefficient is
r
r ± root bxy byx
r ± root bxy/ byx
40. The coefficient of association between two independent attributes is equal to
1
1
0
0.50
41. If X σ2) the standard error of X =Σx n is
σ2/n
σ2/root n
σ/root n
σ
42. Test for goodness of fit is based on
t Distribution
Normal Distribution
Chi-square distribution
F-Distribution
43. For a paired t-test of means with a sample of 20, the degrees of freedom are
18
19
20
None of these
44. Student's t-test was proposed by
R.A. Fisher
Suedecur
Cochran
Gosset
45. The value of skewness for student's t-distribution is
1
1
0
46. For large degrees of freedom the t-distribution tends to
Normal
Chi-square
Log Normal
None of these
47. The relationship between t and F statistics is
t F/2
t2 F
t2 F
t 1/F
48. For a × contingency table the degrees of freedom for chi-square test of independence, are
12
9
8
6
49. In ANOVA the null hypothesis relates to the comparison of
Means
Variances
Proportion
Standard deviations
50. One of the following is not an order statistic
Maximum
Mean
Minimum
Median
51. Any statistical test is said to be unbiased if for that test
Power Size 0
Power Size 0
Power Size
Power Size
52. If X σ2) and x is the sample size then a sufficient statistic for x¯ is
(xn xi)
Σxi
Σ(xi x¯
None of these
53. If tn is an estimator of then Cramer-Rao's inequality provides a lower bound on
Max(tn)
Min(tn)
54. For an unbiased estimator tn, if →0 as n it is called
Efficient
Sufficient
Consistent
All these
55. Rao-Blackwell theorem deals with
Ratio estimation
Level of significance
Sufficient Statistic
Confidence intervals
56. Let X be a standard Normal random variable and Y is a Chi-square random variable with 3 degrees of freedom. Assuming that random variables X and Y are independently distributed, then distribution of X/root Y/3 is
Chi-square distribution
Cauchy distribution
t distribution
Normal distribution
57. BLUE stands for
Best Linear Uniform Estimator
Best likelihood Unbiased Estimator
Bayes Linear Unbiased Estimator
Best Linear Unbiased Estimator
58. If V1 is the variance of the most efficient estimator T1 and V2 is the variance of any other estimate T2, then the efficiency T2 is given by
V1/V2
V2/V1
V1 V2
V2 V1
59. MLE of θ when a sample of observations is drawn from the population having pdf f θe xθ x 0 is
x
s2
(s2
60. Number of conditions for mutual independence of n events are
2n
2n n 1
3n
3n n
61. If x is the mean of Binomial Distribution B then it is
Sufficient statistic for p
Efficient estimator of p
Both and
Neither nor
62. The hypothesis H1 is
Right sided
Left sided
Two-sided
Any of these
63. The set of values of the test statistic, which support the rejection of Null Hypothesis is called
Power
LOS
Critical region
Confidence Interval
64. The probability of committing type II Error is denoted by
α
1 α
1 β
β
65. In the usual notation the one-sample t-test is based on
x σ/root n
x s root n
x σ root n
66. For large samples the test for comparing two proportions is based on distribution.
Poisson
Binomial
Standard Normal
t
67. For any one-sided Z-test the critical value at level of significance is equal to
1.28
2.33
1.96
1.645
68. The test for comparing two variances for equality is based on
χ2-Distribution
F-Distribution
Normal Distribution
t-Distribution
69. For a two sample t-test for means with n1 12 and n2 the degrees of freedom are
12
10
20
21
70. The size of the critical region is known as
Power of test
Critical value
Level of significance
Test range
71. For large the mean of Wilcoxon's Signed Rank test is
n(n
n(n
n(2n
n(n
72. The number of runs in the sequence FFFMMM is
6
1
2
Can't say
73. Wilcoxon test is considered as analogous to
One-sample t-test
Two-sample t-test
Two-sample F-test
Goodness of fit test
74. The mean of number of runs U in run test is given by
N
N/2
75. The non-parametric test for goodness of fit of a distribution is
Run test
Kolmogorov-Smimov test
U-test
Sign test
76. Prestige bias and self interest of respondent leads to
Response error
Non-response error
Grouping error
Standard error
77. Simple Random Sampling is applicable when the population units are
Clustered
Homogeneous
Heterogeneous
Few in number
78. Consider a sample of drawn from a population of size by simple random sampling. Then, the probability of drawing a specified unit of the population is
1/n
1/N
n/N
N/n
79. In the context of sampling the fraction n/N is called
Sampling fraction
Sampling frame
Sampling ratio
None of these
80. Number of total samples of size n which can be drawn from a population of size N under simple random sampling with replacement is
n/N
N n
n N
81. The unbiased estimator of population mean Y¯ under stratified sampling is
Σ Nh yh/N
Σ Nh Yh/N
Σ nh yh
Σ nh yh/n
82. In the usual notation one of the following is only true
VSRS VPROP VOPT
VOPT VPROP VSRS
VSRS VOPT VPROP
None of the above
83. In the usual notation the finite population correction is
N − n
84. With SRSWOR from a finite population of size the variance of proportion is
85. In systematic sampling with k k is called
Sampling interval
Sampling frame
Sampling size
Sampling ratio
86. In a two way analysis of variance with 4 treatments, 5 blocks and 3 observations per cell, the error degrees of freedom are
38
39
40
41
87. A necessary condition for a symmetrical BIBD, assuming the number of treatments as even, is that λ) must be
Perfect Square
Infinite
Positive Integer
Negative Integer
88. The first census in India was held in
1827
1872
1892
1897
89. In the context of census 2010, NPR stands for
New Population Register
National Population Register
National People Register
New Population Rolls
90. The statistical test used to compare the means of three or more independent groups is
Z-test
Paired t-test
ANOVA
Run Test
91. In 33 design the error degrees of freedom with 5 replicates are
108
106
104
102
92. The principle used to estimate experimental error is
Local control
Randomization
Replication
Blocking
93. Two way ANOVA is used in the analysis of
RBD
CRD
LSD
All these
94. In the usual notation the expression for the missing value in a m × m LSD is
95. In the ascending order of efficiency, the following order of basic designs is true
CRD, LSD, RBD
CRD, RBD, LSD
RBD, CRD, LSD
RBD, LSD, CRD
96. The error degrees of freedom in a 2n factorial with r-replicates are
r 2n
(2n
(2n
97. In the usual notation interaction AB in 22 factorial design is given by:
98. In a 23 design when ABC interaction is confounded, each block contains treatment combinations.
8
2
4
3
99. A BIBD is said to be symmetric if
b V and r K
b V and r K
b V and r K
b V and r K
100. In a symmetric BIBD the number of treatments common to any two blocks is
λ2
λ
λ/V
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