Exam 18: Nonparametric Tests: Tests for Ordinal Data

When the null hypothesis is true and n is greater than or equal to 5 per group,the test statistic is approximately distributed as a chi-square distribution.

The one-sample sign test can be used for ordinal data in place of the one-sample t-test.

A researcher finds that the number of positive ranks is 13 and the number of negative ranks is 4 using a sample of 17 participants.Based on these data,what is the decision for a related samples sign test at a .05 level of significance?

The Wilcoxon signed-ranks T test is used as a nonparametric alternative to which parametric test?

The test statistic (x)for the sign test is equal to

For the Friedman test,when Is less than the critical value,we decide to

The Wilcoxon signed-ranks T is a statistical procedure used to determine whether the total ranks in two related groups are significantly different.

A researcher finds that the number of scores above the median is 11 and the number of scores below the median is 5 using a sample of 16 participants.Based on these data,what is the decision for a one-sample sign test at a .05 level of significance?

Variance can't be used to analyze ordinal scale data,because these data do not meaningfully convey distance.

Which of the following best explains how to find the test statistic for the one-sample sign test?

For the Mann-Whitney U test,we reject the null hypothesis when

The Kruskal-Wallis H test is used as a nonparametric alternative to which parametric test?

A researcher compares the ranks in four groups and computes H = 6.55 for the Kruskal-Wallis H test.What is the decision for this test?

For the Wilcoxon signed-ranks T,when T is less than the critical value,we decide to

A researcher computes a related samples sign test in which the number of positive ranks is 9 and the number of negative ranks is 3.The test statistic (x)is equal to

The null hypothesis for the Kruskal-Wallis H test is that scores above and below the median are equal.

When the test statistic for the Friedman test is equal to or smaller than the critical value,we reject the null hypothesis.

When the test statistic for the Mann-Whitney U test is equal to or smaller than the critical value,we reject the null hypothesis.

To compute the test statistic for the Mann-Whitney U test,we sum the ranks in two groups.The test statistic is

Ordinal data indicate that one score is larger or smaller than another.