Question 1

The nonparametric counterpart to the one-way repeated measures analysis of variance is the ____________________.

Accepted Answer

The answer of The nonparametric counterpart to the one-way repeated...

Question 2

When the assumptions of a parametric test are violated,it is appropriate to use a ____________________ test for the data analysis

Accepted Answer

The answer of When the assumptions of a parametric test...

Question 3

The strength of the relationship for Spearman correlation is indicated by the sign of the correlation coefficient and the nature of the relationship is indicated by the magnitude of the correlation coefficient.

Accepted Answer

The statement is partially correct but incomplete. The sign of the correlation coefficient indicates the direction of the relationship (positive or negative), but the magnitude of the correlation coefficient indicates the strength of the relationship.

Question 4

The strength of the relationship for the Kruskal-Wallace test can be measured with eta-squared.

Accepted Answer

The Kruskal-Wallis test is a non-parametric test, and the strength of the relationship is typically measured using epsilon-squared or eta-squared for ANOVA, not Kruskal-Wallis.

Question 5

Of the two major types of parametric tests,the ____________________ is used more often.

Accepted Answer

The answer of Of the two major types of parametric...

Question 6

The Wilcoxon rank sum test is not applicable when the sample sizes of both groups are 10 or greater.

Accepted Answer

The Wilcoxon rank sum test can be used for sample sizes of 10 or greater, making option A false. However, for larger sample sizes, the test may have lower power to detect differences between groups.

Question 7

Friedman analysis of variance by ranks is the nonparametric counterpart of one-way repeated measures analysis of variance.

Accepted Answer

Friedman analysis of variance by ranks is a nonparametric test for comparing three or more related samples. One-way repeated measure ANOVA, on the other hand, is a parametric test used to compare three or more dependent groups based on continuous data. Therefore, Friedman ANOVA by ranks is the nonparametric counterpart of one-way ANOVA instead of repeated measures ANOVA.

Question 8

Regardless of whether the Wilcoxon rank sum test or the Mann-Whitney U test is used,the strength of the relationship between the two variables cannot be determined.

Accepted Answer

The answer of Regardless of whether the Wilcoxon rank sum...

Question 9

In the nonparametric counterpart to the independent groups t test,when samples sizes for one or both groups are smaller than 10,the ____________________ test should be used.

Accepted Answer

The answer of In the nonparametric counterpart to the independent...

Question 10

When one or both sample sizes are smaller than 10 and the independent variable has two and only two values and is between-subjects in nature,then the data can be analyzed using the Mann-Whitney U test.

Accepted Answer

The Mann-Whitney U test can be used when the sample sizes are smaller than 10 and the independent variable has two and only two values and is between-subjects in nature.

Question 11

The nonparametric counterpart to the independent groups t test is the ____________________ test.

Accepted Answer

The answer of The nonparametric counterpart to the independent groups...

Question 12

In a Kruskal-Wallis test,if the null hypothesis of no relationship between the independent variable and the dependent variable is true,we would expect the mean ranks for the three conditions to be different,within the constraints of sampling error.

Accepted Answer

If the null hypothesis of no relationship between the independent variable and the dependent variable is true, we would expect the mean ranks for the three conditions to be similar, within the constraints of sampling error. The Kruskal-Wallis test is used to determine if there are significant differences in the medians of more than two groups.

Question 13

Friedman analysis of variance by ranks involves first rank ordering the means for each experimental group.

Accepted Answer

Friedman analysis of variance by ranks involves rank ordering the data within each block or subject, not the means of each experimental group.

Question 14

The Wilcoxon signed-rank test is the nonparametric counterpart of one-way repeated measures analysis of variance.

Accepted Answer

The Wilcoxon signed-rank test is the nonparametric counterpart of the paired t-test, not the one-way repeated measures ANOVA.

Question 15

Analogous to analysis of variance,rejection of the null hypothesis when a nonparametric test is applied to more than two groups tells us only that at least two of the groups differ,but does not indicate the nature of the relationship.

Accepted Answer

This statement is true. Nonparametric tests, such as the Kruskal-Wallis test, can tell us that there is a difference between at least two groups, but they do not provide information about which specific group(s) are different from each other, or the magnitude or direction of the difference. This is similar to the limitations of traditional ANOVA tests.

Question 16

The Spearman rank-order correlation coefficient ranges from 0 to +1.00 and is interpreted in the same manner as the coefficient of determination.

Accepted Answer

The Spearman rank-order correlation coefficient ranges from -1 to +1, indicating the strength and direction of a monotonic relationship between two variables, unlike the coefficient of determination which ranges from 0 to 1 and represents the proportion of variance explained.

Question 17

For the Wilcoxon signed-rank test,in order for the null hypothesis to be rejected,the observed value of T must be equal to or less than the critical value.

Accepted Answer

For the Wilcoxon signed-rank test, the observed value of T must be equal to or greater than the critical value for the null hypothesis to be rejected. If the observed value of T is less than the critical value, we fail to reject the null hypothesis. Therefore, the statement in the question is false, and the correct answer is A.

Question 18

Rather than comparing groups in terms of their means,nonparametric tests compare groups in terms of differences between ____________________ of scores.

Accepted Answer

The answer of Rather than comparing groups in terms of...

Question 19

Spearman rank-order correlation,more simply known as Spearman correlation,is a nonparametric counterpart of Pearson correlation.

Accepted Answer

This statement is correct. Spearman rank-order correlation is a nonparametric measure of correlation that assesses the strength of the relationship between two variables based on the ranks (or ordinal values) of the data, rather than on the actual values of the data themselves. It is widely used in social and behavioral sciences, as well as in other fields where normality assumptions may not be met or where data are ranked.

Question 20

The Kruskal-Wallis test is the nonparametric counterpart of one-way between subjects analysis of variance.

Accepted Answer

The Kruskal-Wallis test is a nonparametric test used to compare three or more groups, and it is equivalent to the one-way between subjects ANOVA test. Therefore, the statement is true.

Quiz 15: Nonparametric Statistics