MCQs Non-Parametric-1

1. The Wilcoxon rank-sum test compares

2. In the Kruskal-Wallis test of $k$ samples, the appropriate number of degrees of freedom is

3. In a Wilcoxon rank-sum test

4. The Mann-Whitney U test is preferred to a t-test when

5. Three brands of coffee are rated for taste on a scale of 1 to 10. Six persons are asked to rate each brand so that there is a total of 18 observations. The appropriate test to determine if three brands taste equally good is

6. If a Chi-square goodness of fit test has 6 categories and an N=30, then the correct number of degrees of freedom is

7. When testing for randomness, we can use

8. The Wilcoxon rank-sum test can be

9. In testing for the difference between two populations, it is possible to use

10. The Runs test results in rejecting the null hypothesis of randomness when:

11. To perform a runs test for randomness the data must be

12. 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 well call for:

13. Which of the following tests must be two-sided?

14. Which of the following test use rank sums?

15. Compare to parametric methods, the nonparametric methods are

16. The sign test is

17. Which of the following test is most likely assessing the null hypothesis of “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=0.4”

18. When using the Sign test, if two scores are tied, then we

19. The nonparametric equivalent of an unpaired samples t-test is

20. The sign test assumes that the samples are

21. The Wilcoxon signed-rank is used

22. The Spearman rank-correlation test requires that the