501. E(x1 x2)= ___________________?
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A. u1 u2

B. ux x2

C. 62 x2

D. 6x x2

502. __________ is the process of using sample information to reach?
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A. Unbiased

B. Biased

C. Population

D. Increase

503. In sampling with replacement be t a sampling unit can selected________________?
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A. Only once

B. None

C. More than once

D. Less than once

504. Check the consistency used _____________?
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A. Coefficient of dispersion

B. Mean coefficient

C. Coefficient of variance

D. Q.D.

505. The shape of the symmetrical distribution is _______?
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A. None of these

B. Bell- Shaped

C. J- Shaped

D. U- Shaped

506. If variance iv standard deviation is minimum if the deviation taken from______________?
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A. Mode

B. Mean

C. Average

D. G.M.

507. Ratio between given year and base year is called __________ in percentage?
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A. Price relative

B. Retail prices

C. None of these

D. Link relative

508. if f(x1,x2,xn;?)=g(?;?)h(x1,x2,.,xn), then ? is____________?
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A. Unbiased

B. Sufficient

C. Consistent

D. Efficient

509. Which of the following test use Rank Sums____________?
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A. Kruskal-Wallis and Wilcoxon tests

B. Runs test

C. Chi-Square and sign test

D. F test

510. Mean deviation is always ________________?
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A. More than S.D.

B. Negative

C. Less than S.D.

D. Equal to S.D.

511. First movement about mean is always equal to ___________?
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A. None of these

B. S.D.

C. Zero

D. 1

512. The arithmetic mean _________ by 10 if 10 is added to all values?
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A. Smaller

B. Decease

C. Increase

D. Largest

513. In which distribution successive trials are without replacement:____________________?
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A. Geometric distribution

B. Poisson distribution

C. Hypergeometric distribution

D. Binomial distribution

514. The degree to which numerical data tend to spread about an average value is a________________?
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A. Minimum

B. Dispersion

C. Range

D. variance

515. The sum of square of deviation is least when measured from ____________?
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A. Mode

B. Mean

C. Arbitrary value

D. G.M.

516. Average calculated used in index number by __________ method?
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A. Four

B. One

C. Three

D. Two

517. Let X1,X2,,Xn be a random sample from a density,,,, f(x ? ?) where ? is a value of the random variable ?with known density g?(?) Then the estimator ?(?) with/ respect to the prior g?(?) is define as_________________E[?(?)?X1,X2,..,Xn] is called?
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A. Bays estimator

B. Sufficient estimator

C. Posterior Bays estimator

D. Minimax estimator

518. If the smallest observation in a data is decreased, the average which is not affected is______________?
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A. Median

B. G.M.

C. Harmonic mean

D. Mean

519. Which of the following test must be two-sided ?
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A. Kruskal-Wallis

B. Wilcoxon Signed Rank

C. Runs test

D. Sign test
520. Standard deviation is always calculated from _____________?
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A. Mode

B. Mean

C. Median

D. G.M.

521. Mean deviation, Variance and Standard Deviation of the values 4,4,4,4,4,4 is_______________?
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A. 2

B. 8

C. 4

D. 0
522. The standard deviation is affected by the value of every____________?
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A. Items

B. Observation

C. Relative Dispersion

D. Absolute

523. The mean and the variance are equal in________________?
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A. All probability distribution

B. The binomial distribution

C. The Poisson distribution

D. The hypergeometric distribution

524. The formula ?poqn/?poqo x100 is used to calculate_______________?
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A. The Paasche quantity index

B. The Paasche price index

C. The Laspeyres price index

D. The Laspeyres quantity index
525. Volume index in Marshall is _______________?
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A. ?qn(qo + qn)/?qn(po + pn) x100

B. ?pn(qo + qn)/?pn

C. ?qn(Po + Pn)/ ?qo (Po + Pn) x100

D. ?pn(Po + Pn)/ ?pn (Po + Pn)

526. In a symmetrical distribution mean, median and mode, _________________?
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A. Positive

B. Coincide

C. Greater

D. Less than

527. The Spearman Rank-Correlation test requires that the______________?
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A. Data should be of ordinal scale at least

B. Data must be distribution at least approximately as a t-distribution

C. Data must be from two independent samples

D. Data must be measured on the same scale

528. Let Z1,Z2,.Zn be independent and identically distributedrandom variable, satisfying E[? Zt ?]<?. Let N be an integer valued random variable whose value n depends only on the values of the first n Z's. Suppose E(N)< ?, then E(Z1,Z2,.Zn)=E(N)E(Z) is called ?
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A. Neyman Pearson Lemma

B. Independence Equation

C. Sequential Probability Likelihood Equation

D. Walds Equation

529. The A.M. is greater than mode is equal to ______________?
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A. +vely

B. Negatively

C. Skewness

D. zero

530. Binomial distribution is symmetrical when P=___________________?
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A. 1 P

B. q

C. x

D. n

531. Paasches Index number is ______________?
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A. ?pnqo/?poqo

B. ?pnqo/?pnqo x100

C. ?pnqn/?poqo

D. ?pnqn/?poqn x100

532. If mean and variance are not equal then distribution ________________?
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A. Skewed

B. Symmetrical

C. None

D. Equal

533. If Y=-8X 5 and SD of X is 3, then SD of Y is______________?
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A. 8

B. 3

C. None of these

D. 24
534. __________ of the distribution which is measured relative to the distribution known as Normal?
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A. Flatness

B. Skewed

C. Moment

D. Normal

535. A quantity obtained by applying certain rule or formula is known as ________________?
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A. Estimator

B. Sample

C. Test Statistics

D. Estimate

E. Estimation

536. A test is said to be most powerful test of size ?, if_______________?
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A. Among all other test of size ? or greater it has the largest ?

B. Among all other test of size ? or greater it has the largest 1 ?

C. Among all other test of size ? or greater it has the smallest power

D. Among all other test of size ? or less it has the largest power
537. The level of significance is denoted by _________________?
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A. ?

B. 1 ?

C. ?

D. 1 ?

538. Binomial distribution is negatively skewed when:__________________?
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A. p=0

B. p>1/2

C. p=1/2

D. p=1/3

539. If u = 5 and S.D. = 2.5 then Binomial distribution are ________________?
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A. Fair

B. Wrong

C. None of these

D. Unequal

540. In the binomial experiment, the outcomes of each trial maybe classified into ______________?
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A. Success or Failure

B. Success

C. None of these

D. Failure

541. A random variable X has binomial distribution with n = 10 and p = 0.3 then variance of X is:_____________________?
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A. 21

B. None

C. 2.1

D. 10

E. 12

542. A binomial random variable can assume values from _________ to n?
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A. 6

B. 0

C. 2

D. 3

543. For a population consisting of 4 members, a sample of size 2 is taken replacement, then the number of all the possible samples are?
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A. 4

B. 8

C. 16

D. 32

544. Which of the following test is most likely assessing this null hypothesis: Ho The number of violations per apartment in the population of all city apartments is binomially distributed with a probability of success in any one trial of P=0.3 dd ?
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A. The Kruskal-Wallis test

B. The Kolmogorove-Simirnor test

C. The Mann-Whitney test

D. The Wilcoxon Signed Rank test

545. Which of the following is an assumption underlying the use of the t-distribution ?
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A. The sample are drawn from a normally distributed population.

B. The variance of the population is known

C. All above

D. s (sample standard deviation) is an unbiased estimate of the population variance.

546. Each trial in Binomial distribution has:_________________?
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A. Two Outcome

B. Three Outcome

C. One Outcome

D. Four Outcome

547. Which of the following is simple hypothesis___________________?
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A. u = 20

B. u ? 20

C. u 20

548. We use non parametric tests when the data is_________?
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A. Qualitative

B. Ranked

C. Both a and b

D. None of these

549. Which sampling method we will apply if there is no sampling frame?
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A. Stratified sampling

B. Simple random sampling

C. Systematic sampling

D. Cluster sampling
550. The value maximum ordinate of a standard normal curve at Z = 0 is:________?
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A. 1

B. 0.5

C. 0.3989

D. None of these