Statistics MCQs

Page No. 31

In binomial distribution the probability of success remains __________ from trial to trial?


aConstant

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bVaries

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cFour

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dProbability

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View Answer Constant

Let X1,X2,……,Xn be a random sample from a density,,,, f(x ι θ) where θ is a value of the random variable Θwith known density gΘ(θ) Then the estimator ∏(θ) with…/ respect to the prior gΘ(θ) is define as______________E[∏(θ)ιX1,X2,…..,Xn] is called?


a Posterior Bay’s estimator

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bMinimax estimator

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cBay’s estimator

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dSufficient estimator

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The non parametric equivalent of an unpaired samples t-test____________?


aKruskal Wallis Test

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bMann-Whitney U test

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c Wilcoxon signed rank test

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dSign test

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View Answer Mann-Whitney U test

When testing for randomness, we can use_____________?


aSign test

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b None of these

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cRuns test

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dD Mann-Whitney U test

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View Answer Runs test

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 ?


aThe Mann-Whitney test

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bThe Kruskal-Wallis test

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cThe Wilcoxon Signed Rank test

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dThe Kolmogorove-Simirnor test

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Which of the following test must be two-sided ?


aSign test

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bWilcoxon Signed Rank

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cKruskal-Wallis

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dRuns test

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View Answer Sign test

The Wilcoxon, Rank-Sum test used to compares_______________?


aAny number of populations

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bA sample mean to the population mean

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cTwo populations

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dThree populations

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View Answer Two populations

Comparing the times to failure of radar transponders made by firms A, B, and C based on an airline’s sample experience with the three types of instruments one may use____________?


a Kolmogorov-Smirnor test

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b Wilcoxon Rank-Sum test

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cSpearman Rank Correlation test

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dKruskal-Wallis test

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View Answer Kruskal-Wallis test

The Runs test results in rejecting the null hypothesis of randomness when______________?


aThere is an unusually large number of runs

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bThere is an unusually small number of runs

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c None of these

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dEither of the above

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View Answer Either of the above

In testing for the difference between two populations, it is possible to use____________?


aThe Wilcoxon Rank-Sum test

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bThe Sign test

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cNone of the above

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d Either of the above

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