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Exam 16: Nonparametric Statistics

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Question 1

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Distribution-free tests are used when _____.

A) samples are larger than 40
B) parametric assumptions are markedly violated
C) data are normally distributed
D) none of these

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Question 2

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The alternative hypothesis for the Kruskal-Wallis test can be interpreted as follows:

A) The mean ranks for the conditions should be the same,and any differences are merely due to sampling error.
B) The mean ranks for the conditions will not all be the same.
C) The expected value for the difference scores will be less than the average for the full sample.
D) The value of the H statistic will be lower than a specified critical value.

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Question 3

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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.

Which of the following research designs is appropriate for the Wilcoxon rank sum test?

Rather than comparing groups in terms of means (as is the case with t tests and analysis of variance),the nonparametric procedures compare groups in terms of medians or other features of a distribution.

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

Under what conditions is the Kruskal-Wallis test used to analyze the relationship between two variables?

Two types of nonparametric tests are _____ and _____ tests.

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

The most common approach to dealing with tied scores is to rank the scores,assign the tied scores the average of the ranks involved,and then to introduce a correction term into the formula for the test statistic to adjust for the presence of ties.

The null and alternative hypotheses for the Kruskal-Wallis test are identical to those for the one-way between subjects analysis of variance,except that they are stated in terms of the mean ranks.

The Friedman analysis of variance by ranks is typically used to analyze the relationship between two variables when:

The _____ of the relationship for the Wilcoxon signed-rank test can be measured using the matched-pairs rank biserial correlation coefficient.

Another name for nonparametric statistical tests is a(n) _____.

The Friedman analysis of variance by rank is a nonparametric alternative to which parametric test?

Statistical tests that require assumptions about the distribution of scores in the populations from which the samples are selected are called _____ statistical tests.

The nature of the relationship cannot be addressed in nonparametric tests.

A researcher examined the relationship between gender and attitudes toward drinking alcohol.The researcher obtained the following data: What is the value for the Glass rank biserial correlation coefficient?

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

The Spearman rank-order correlation is a nonparametric counterpart of the: