statistics MCQs – Page 48

Practise multiple-choice questions from statistics for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

statistics Mcqs

1. sample linear regression 2. normal distribution 3. presentation of data 4. statistical inference 5. measures of location 6. basic statistics 7. correlation and regression 8. sampling 9. binomial and hyper geometric probability 10. index number 11. hypothesis testing 12. measures of dispersion

941. Type II error is committed when the null hypothesis is _________________?
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A. Rejected when it is true

B. Accepted when it is false

C. Rejected when it is false

D. Accepted when it is true

942. In hypothesis testing probability of (alpha +beta) =1?
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A. Increase

B. No

C. Decrease

D. Yes

943. If the conditional distribution of X1,X2,..Xn given S=s, does not depends on ?, for any value of S=s the statistics S=s(X1,X2,..Xn) is called______________?
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A. Unbiased

B. Consistent

C. Efficient

D. Sufficient

944. __________ is the process of using sample information to reach?
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A. Increase

B. Biased

C. Unbiased

D. Population

945. Sample proportion P is __________ estimator?
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A. Parameter

B. Unbiased

C. None of these

D. Biased

946. A set of jointly sufficient statistic is defined to be minimal sufficient if and only if_______________?
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A. It is a function of every other set of sufficient

B. It is a function of any sufficient statistics in the set.

C. It is not a function of every other set of sufficient statistics.

D. It is a function of some other set of sufficient statistics.

947. Sampling Error decrease by _______ the sample size?
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A. Sampling

B. Population

C. Increase

D. Decrease

948. The Wilcoxon, Rank-Sum test used to compares_______________?
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A. Two populations

B. Three populations

C. A sample mean to the population mean

D. Any number of populations

949. 95% confidence limits for P are _________________?
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A. P1.96 p2q2/?n

B. P1.65(pq/n)

C. P1.96?p2q2/n

D. P2.18?p2q2/n

950. Combine mean calculated by different given mean is ________?
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A. ?n1x/x1

B. n1x1 + n2x2x + _____ nuxu/n1 + n2 + ___+ nu

C. n1x1 + n2x2x + _____ nuxu/n1 +n2 + ___ + nu

D. n1x1 + n2x2x + _____ nuxu/x1 + x2 + ____ x4

951. We must arrange the data before calculating _________?
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A. Mean

B. G.M.

C. Mode

D. Median

952. Third quartile = Q3 = ____________?
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A. None of these

B. D3

C. Median

D. P33

953. The sum of deviations of observations is zero, when deviations are taken from __________?
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A. Mean

B. Median

C. None of these

D. Mode

954. The median of numbers, 12, 22, 32,__(2n + 1)2 is given by______?
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A. (n2 + 1)

B. (2n + 1)2

C. (N 1)2

D. (n + 1)2

955. The mode of the data 2,4,6,6,6,8 is _______________?
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A. 4

B. 30

C. 8

D. 6

956. The arithmetic mean of 10,8,6,4, and 2 is ______________?
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A. 15

B. 30

C. 6

D. 5

957. Harmonic mean cannot be calculated if any one of the values in the data is _____________?
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A. Negative

B. Positive

C. All sign

D. Zero

958. Mean is relatively ____ measure?
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A. Group

B. Change

C. Stable

D. manipulation

959. A distribution is called _____ distribution if it has two modes?
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A. Uni-modal

B. Bi-model

C. None of these

D. Tri-modal

960. __________ deviation taken from A.M. is always equal to zero?
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A. Average

B. Sum

C. 2.D.

D. Mean

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