MCQs Non-Parametric-1

1. The Wilcoxon signed-rank is used

2. The Spearman rank-correlation test requires that the

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

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

5. 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”

6. The Wilcoxon rank-sum test can be

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

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

9. The Wilcoxon rank-sum test compares

10. In a Wilcoxon rank-sum test

11. When testing for randomness, we can use

12. 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

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

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

15. 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:

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

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

18. Which of the following test use rank sums?

19. Compare to parametric methods, the nonparametric methods are

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

21. The sign test is

22. The sign test assumes that the samples are