The Mann-Whitney U test is preferred to a t-test when____________?

Related Mcqs:

1. A test is said to be most powerful test of size α, if_______________?

   A. Among all other test of size α or less it has the largest power
   B. Among all other test of size α or greater it has the largest 1 – α
   C. Among all other test of size α or greater it has the smallest power
   D. Among all other test of size α or greater it has the largest β

2. Which test is better than sign test?

   A. Wilcoxon signed rank test
   B. Wilcoxon rank sum test
   C. Mann Witney U test
   D. All the above

   Submitted by: Nimra Shaheen

3. The Spearman Rank-Correlation test requires that the______________?

   A. Data must be measured on the same scale
   B. Data should be of ordinal scale at least
   C. Data must be distribution at least approximately as a t-distribution
   D. Data must be from two independent samples

4. To perform a Runs test for randomness the data must be_______________?

   A. Divided into at least two classifications
   B. Divided into exactly two classifications
   C. Quantitative
   D. Qualitative

5. When using the sign test, if two scores are tied, then_____________?

   A. We count them
   B. We discard them
   C. We depends upon the scores
   D. non of these

6. Analysis of Variance (ANOVA) is a test for equally of______________?

   A. Variances
   B. Proportions
   C. Only two parameters
   D. Means

7. The critical value of a test statistic is determined from_____________?

   A. The sampling distribution of the statistics assuming Null Hypothesis
   B. calculations based on many actual repetitions of the same Experiment
   C. The sampling distribution of the statistic assuming Alternative Hypothesis.
   D. Non of these

8. Which of the following test must be two-sided ?

   A. Sign test
   B. Wilcoxon Signed Rank
   C. Kruskal-Wallis
   D. Runs test

9. 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 ?

   A. The Mann-Whitney test
   B. The Kruskal-Wallis test
   C. The Wilcoxon Signed Rank test
   D. The Kolmogorove-Simirnor test

10. An alternative non parametric test of ANOVA?

    A. Sign test
    B. Wilcoxon sign rank test
    C. Median test
    D. Kruskal Wallis test 

    Submitted by: Nimra Shaheen