Question 1

Most parametric tests focus on differences between ____ and their corresponding nonparametric tests focus on differences between ____.

Accepted Answer

A)  population means;distributions of scores
B)  distributions of scores;population means
C)  population means;population means
D)  distributions of scores;distributions of scoresE) B) and D)
F) B) and C)

Question 2

What is meant by the phrase "outlier resistant"?

Accepted Answer

A benefit of many nonparametric statisti...

Question 3

Nonparametric tests can not be used to analyze quantitative variables that are measured on an ordinal level.

Accepted Answer

A) True 
 B)False

Question 4

The Kruskal-Wallis test is the nonparametric counterpart of the:

Accepted Answer

A)  one-way repeated measures analysis of variance
B)  one-way between-subjects analysis of variance
C)  independent groups t test
D)  correlated groups t testE) All of the above
F) B) and C)

Question 5

The sum of the ranks for a given group,Rj,is known as the R statistic.

Accepted Answer

A) True 
 B)False

Question 6

The strength of the relationship following a statistically significant _____ can be analyzed using epsilon squared.

Accepted Answer

A)  Wilcoxon signed-rank test
B)  Kruskal-Wallis test
C)  Spearman rank-order correlation
D)  Mann-Whitney U test
E)  Wilcoxon rank sum testF) C) and D)
G) None of the above

Question 7

The _____ involves converting a set of scores on a variable to ranks and then analyzing these rank scores using the traditional parametric formulas.

Accepted Answer

A)  rank order approach
B)  rank transformation approach
C)  parametric approach
D)  traditional approachE) All of the above
F) C) and D)

Question 8

The nature of the relationship between the two variables for the Wilcoxon signed-rank test is addressed by inspection of the:

Accepted Answer

A)  rank sums
B)  sum of squared ranks
C)  mean ranks
D)  group meansE) All of the above
F) C) and D)

Question 9

A researcher examined the relationship between gender and attitudes toward drinking alcohol.The researcher obtained the following data: 
What is the U statistic for this data set?

Accepted Answer

A)  7.5
B)  10.5
C)  -7.5
D)  -10.5E) B) and C)
F) A) and D)

Question 10

If one wishes to compare medians across groups,then a parametric test should be pursued.

Accepted Answer

A) True 
 B)False

Question 11

The Wilcoxon signed-rank test is typically used to analyze the relationship between two variables when:

Accepted Answer

A)  scores on the dependent variable are in the form of ranked differences
B)  the independent variable is within-subjects in nature
C)  the independent variable has two and only two levels
D)  all of theseE) A) and B)
F) B) and C)

Question 12

In cases where a tie occurs in rank scores,the tied scores are discarded.

Accepted Answer

A) True 
 B)False

Question 13

Following a significant Mann-Whitney U test,the strength of the relationship between two variables may be measured using ____.

Accepted Answer

A)  Glass rank biserial correlation coefficient
B)  matched-pairs rank biserial correlation coefficient
C)  epsilon-squared
D)  Dunn's procedureE) A) and C)
F) A) and D)

Question 14

In the Wilcoxon sign-rank test,the strength of the relationship can be measured with the matched-pairs rank biserial correlation coefficient.How is the calculated value interpreted for the strength of the relationship?

Accepted Answer

A)  The coefficient is interpreted the same way as the values for Epsilon-squared.
B)  The coefficient is interpreted the same way as the values for omega-squared.
C)  The coefficient is interpreted the same way as the values for eta-squared.
D)  The coefficient is interpreted the same way as the Pearson correlation coefficient.E) A) and B)
F) A) and C)

Question 15

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

A) True 
 B)False

Question 16

The null hypothesis of the Wilcoxon signed-rank test can be stated in words as follows:

Accepted Answer

A)  The rank sum for each group will be equal,and any differences are due to sampling error.
B)  The expected value for each rank sum will be equal to the average of the rank sums for the positive and negative differences.
C)  The expected value for difference scores will be less than the average of the rank sums for the positive and negative differences
D)  The rank sum for each group will be less than the total rank sum.E) All of the above
F) B) and C)

Question 17

A researcher examined the relationship between gender and attitudes toward drinking alcohol.The researcher obtained the following data: 
What is the U value for group 2?

Accepted Answer

A)  7.5
B)  10.5
C)  -7.5
D)  -10.5E) All of the above
F) None of the above

Question 18

One factor that is important in deciding whether to use a parametric or non-parametric test is the decision about what aspect of the distribution of the independent variable one wishes to focus on.

Accepted Answer

A) True 
 B)False

Question 19

The nature of the relationship following a statistically significant _____can be analyzed using the Dunn procedure.

Accepted Answer

A)  Wilcoxon signed-rank test
B)  Kruskal-Wallis test
C)  Spearman rank-order correlation
D)  Mann-Whitney U test
E)  Wilcoxon rank sum testF) B) and D)
G) A) and B)

Question 20

What is the rank transformation approach?

Accepted Answer

The rank transformation approa...

Exam 16: Nonparametric Statistics

The sum of the ranks for a given group,Rj,is known as the R statistic.

Correct AnswerverifiedShow Answer

The Wilcoxon signed-rank test is typically used to analyze the relationship between two variables when:

Correct AnswerverifiedShow Answer

The nature of the relationship between the two variables for the Wilcoxon signed-rank test is addressed by inspection of the:

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

The Kruskal-Wallis test is the nonparametric counterpart of the:

Correct AnswerverifiedShow Answer

The _____ involves converting a set of scores on a variable to ranks and then analyzing these rank scores using the traditional parametric formulas.

Correct AnswerverifiedShow Answer

If one wishes to compare medians across groups,then a parametric test should be pursued.

Correct AnswerverifiedShow Answer

The null hypothesis of the Wilcoxon signed-rank test can be stated in words as follows:

Correct AnswerverifiedShow Answer

A researcher examined the relationship between gender and attitudes toward drinking alcohol.The researcher obtained the following data: What is the U statistic for this data set?

Correct AnswerverifiedShow Answer

One factor that is important in deciding whether to use a parametric or non-parametric test is the decision about what aspect of the distribution of the independent variable one wishes to focus on.

Correct AnswerverifiedShow Answer

Most parametric tests focus on differences between ____ and their corresponding nonparametric tests focus on differences between ____.

Correct AnswerverifiedShow Answer

The nature of the relationship following a statistically significant _____can be analyzed using the Dunn procedure.

Correct AnswerverifiedShow Answer

In the Wilcoxon sign-rank test,the strength of the relationship can be measured with the matched-pairs rank biserial correlation coefficient.How is the calculated value interpreted for the strength of the relationship?

Correct AnswerverifiedShow Answer

What is the rank transformation approach?

Correct AnswerverifiedThe rank transformation approa...View AnswerShow Answer

In cases where a tie occurs in rank scores,the tied scores are discarded.

Correct AnswerverifiedShow Answer

Nonparametric tests can not be used to analyze quantitative variables that are measured on an ordinal level.

Correct AnswerverifiedShow Answer

A researcher examined the relationship between gender and attitudes toward drinking alcohol.The researcher obtained the following data: What is the U value for group 2?

Correct AnswerverifiedShow Answer

What is meant by the phrase "outlier resistant"?

Correct AnswerverifiedA benefit of many nonparametric statisti...View AnswerShow Answer

The strength of the relationship following a statistically significant _____ can be analyzed using epsilon squared.

Correct AnswerverifiedShow Answer

Following a significant Mann-Whitney U test,the strength of the relationship between two variables may be measured using ____.

Correct AnswerverifiedShow Answer

The sum of the ranks for a given group,R_j,is known as the R statistic.

Correct Answer
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Most parametric tests focus on differences between and their corresponding nonparametric tests focus on differences between .

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The rank transformation approa...
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A benefit of many nonparametric statisti...
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