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.Management Sciences
Category: Statistical Inference Mcqs
The Mann-Whitney U test is preferred to a t-test when____________?
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A. Sample are dependent
B. The assumption of normality is not met
C. Sample sizes are small
D. Data are paired
_________ is an estimate expressed by a single value?
A. C.I.
B. Point estimator
C. Parameter
D. Point estimate
Which of the following test must be two-sided ?
A. Sign test
B. Wilcoxon Signed Rank
C. Kruskal-Wallis
D. Runs test
The hypothesis which is being tested is called ___________________?
A. Composite hypothesis
B. Alternative hypothesis
C. Null hypothesis
D. Simple hypothesis
condition for applying Central Limit Theorem (CLT) which approximate the sampling distribution of the mean with a normal distribution is ?
A. n > 30
B. N(1 – p) > 5
C. 2 n 5
E. N < 30
A_______ is the specific value of the statistic used to estimate the population parameter?
A. Point estimator
B. C.I.
C. Estimator
D. None of these
if f(x1,x2,…xn;θ)=g(θˆ;θ)h(x1,x2,….,xn), then θˆ is____________?
A. Consistent
B. Sufficient
C. Efficient
D. Unbiased
In a Wilcoxon Rank-Sum test__________________?
A. Ties within one sample may affect the decision
B. Ties always affect the decision
C. Ties never affect the decision
D. Ties between the two sample may affect the decision
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