Exam 15: Nonparametric Tests for Ordinal Data: Understanding and Interpretation

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

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

A researcher computes Wilcoxon T = 12 and finds that this value is larger than the critical value.The decision is to reject the null hypothesis.

When the test statistic for the Kruskal-Wallis H test is equal to or smaller than the critical value,we reject the null hypothesis.

Which of the following dispersions of scores for two groups,A and B,best illustrates the null hypothesis for a Mann-Whitney U test?

Tests for ordinal data can ________ the power to detect an effect when data are skewed.

Each of the following hypothesis tests has a normal approximation formula,except for the

A researcher computes the Wilcoxon signed-ranks T test.She finds that the sum of positive ranks is 56 and the sum of negative ranks is 22.What is the value of the test statistic,T?

The sign test is used as a nonparametric alternative to which parametric 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 test statistic for the Friedman test is largest when

Which of the following scales of measurement are analyzed using a nonparametric test?

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

The key advantage of measuring ranked data is that it minimizes ________ caused by outliers.

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

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.

A researcher computes = 17 and = 38.What is the value of the test statistic for a Mann-Whitney U test?

A researcher computes the Wilcoxon signed-ranks T test.She computes T = 68 using a sample of 24 participants.What is the decision for a two-tailed test at a .05 level of significance?

What is the null hypothesis for a Kruskal-Wallis HH test?

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