statistics MCQs – Page 20

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 Review each marked answer and report any item that may be outdated or unclear.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

381. For t distribution, increasing the sample size, the affect will be on ?
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A. Degrees of Freedom

B. The t-ratio

C. All Above

D. Standard Error of the Means

382. For a binomial distribution?
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A. n must assume a number between 1 and 20 or 25

B. p must be a multiple of 10

C. There must be at least 3 possible outcomes

D. None of these

383. In binomial distribution the probability of success remains __________ from trial to trial?
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A. Constant

B. Probability

C. Varies

D. Four

384. Price in proceeding year used in the method is called __________?
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A. Volume

B. Chain Method

C. Fixed Method

D. Aggregation Method

385. The mean of binomial distribution is:__________________?
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A. npq

B. np

C. ?np

D. nq?

E. ?npq

386. Fishers ideal index number is also obtained by _______________?
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A. Taking A.M. of Laspeyres and Paasches index

B. Taking G.M. of Laspeyres and Paasches index

C. Both (a) and (b)

D. None of these

387. Since E(X) _______X is said to be unbiased estimator of the population mean?
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A. Q

B. X

C. u

D. Ux

388. if Var(?)?0 as n ? 0, then ? is said to be______________?
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A. Sufficient

B. Unbiased

C. Efficient

D. Consistent

389. Second moment about mean is always equal to _____________?
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A. S.D.

B. Variance

C. C.V.

D. Square

390. All Index numbers are not suitable for all _________________?
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A. Price

B. Chain relative

C. Purpose

D. Kind

391. Qon means _________ for the given year?
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A. Quantity Index

B. Commodity

C. Quantity in current

D. Price

392. In a binomial distribution mean and variance is _________________?
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A. Variance > mean

B. Mean < variance

C. Variance ? mean

D. None of these

393. Criteria to check a point estimator to be good are_____________?
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A. Consistency

B. Efficiency

C. All Above

D. Unbiasedness

394. The mean and variance of binomial distribution are ______________?
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A. None

B. Unequal

C. Equal

D. Symmetrical

395. The lack of uniformity is called ______________?
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A. X= 5

B. variation

C. Lack

D. Skewness

396. which is poor measure of dispersion in open-end distribution ________________?
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A. None of these

B. Semi-inter quartile range

C. Quartile- deviation

D. Range

397. (q + p) has variance is ______________?
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A. 7 pq

B. npq

C. 3 pq

D. 6 pq

398. A sample of 92 observations is taken from an infinite population. The sampling distribution of is approximately ?
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A. Normal because of the central limit theorem

B. Normal because the sample size is small in comparison to the population size

C. None of these alternatives is correct.

D. Normal because is always approximately normally distributed

399. If we increase the sample size, it means that it:_________________?
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A. Increases the Standard error

B. Decreases the Standard error

C. Decreases the Standard error

D. Both (a) and (b)

400. For a biased estimator ? of ?, which one is correct_______________?
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A. MSE(?)=Var(?)+Bias2

B. MSE(?)=SD(?)+Bias2

C. MSE(?)=SD(?)+Bias

D. MSE(?)=Var(?)+Bias

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