Question 1

The nonparametric equivalent to the one-way repeated measures ANOVA is the _____ test.

Accepted Answer

A) Chi-square 
B) t 
C) Friedman test 
D) Kruskal-Wallis 
A) Chi-square 
B) t 
C) Friedman test 
D) Kruskal-Wallis C

Question 2

Imagine I conducted the following experiment: I used gender as a nonmanipulated independent variable and measured performance in my class. I measured performance by ranking everyone in the class, giving the person with the highest grade a 1, the person with the 2nd highest grade a 2, and so forth. Which statistic would I use to determine any differences in performance between these two groups?

Accepted Answer

Because the data are ordinal (ranked) you would use a Wilcoxon test. Furthermore, because the nonmanipulated independent variable is between-subjects (gender), the exact test would be the Wilcoxon Rank-Sum Test.​

Question 3

You notice that in your introductory psychology class, it appears that more men tend to sit near the door and more women opposite the door. In order to determine whether this difference is significant, you collect data on the seating preferences for the students in your class. The data appear below.
  
a) What statistical test should be used to analyze these data? 
b) Identify H0 and Ha for this study.
c) Conduct the appropriate analysis. ?
d) Should H0 be rejected? What should the researcher conclude?

Accepted Answer

a) The chi-square test of independence should be used. 
b)  H0: There are no differences in seating preference. Ha: There are differences in seating preference. 
c) 2 (1, N = 71) = 4.99, p < .05. 
d) Yes, H0 should be rejected. The researcher should conclude that significantly more males sit near the door and significantly more females sit opposite the door. 1

Question 4

The nonparametric equivalent to the one-way randomized ANOVA is the _____ test.

Accepted Answer

A) Chi-square 
B) Friedman test 
C) r2 
D) Kruskal-Wallis 
A) Chi-square 
B) Friedman test 
C) r2 
D) Kruskal-Wallis

Question 5

Chi-square tests are to _____ data as Wilcoxon tests are to _____ data.

Accepted Answer

A) ordinal; interval 
B) nominal; ordinal 
C) ordinal; nominal 
D) ratio, ordinal 
A) ordinal; interval 
B) nominal; ordinal 
C) ordinal; nominal 
D) ratio, ordinal

Question 6

Nonparametric is to parametric as _____ is to _____.

Accepted Answer

A) t test; z test 
B) z test; t test 
C) χ2 test; t test 
D) t test; χ2 test 
A) t test; z test 
B) z test; t test 
C) χ2 test; t test 
D) t test; χ2 test

Question 7

Wilcoxon rank-sum test is to _____ as Wilcoxon matched-pairs signed-ranks T test is to _____.

Accepted Answer

A) ordinal data; nominal data 
B) interval data, ordinal data 
C) between-subject design; within-subjects design 
D) within-subjects design; between-subjects design 
A) ordinal data; nominal data 
B) interval data, ordinal data 
C) between-subject design; within-subjects design 
D) within-subjects design; between-subjects design

Question 8

The _____ is a nonparametric inferential test for comparing sample medians of two dependent or related groups of scores.

Accepted Answer

A) Wilcoxon matched-pairs signed-ranks T test 
B) Wilcoxon rank-sum test 
C) χ2 test for independence 
D) χ2 goodness-of-fit test 
A) Wilcoxon matched-pairs signed-ranks T test 
B) Wilcoxon rank-sum test 
C) χ2 test for independence 
D) χ2 goodness-of-fit test

Question 9

The calculation of the df for the χ2 test of independence is

Accepted Answer

A) r x c - 1. 
B) (r-1)(c-1). 
C) (r-c)n. 
D) r x c. 
A) r x c - 1. 
B) (r-1)(c-1). 
C) (r-c)n. 
D) r x c.

Question 10

What are the assumptions of the Wilcoxon rank-sum test?

Accepted Answer

The data are ratio, interval, or ordinal

Question 11

The Wilcoxon tests are used with _____ data.

Accepted Answer

A) ordinal 
B) interval 
C) ratio 
D) nominal 
A) ordinal 
B) interval 
C) ratio 
D) nominal

Question 12

When using the Wilcoxon tests, the obtained value must be ______ the critical value in order to establish statistical significance.

Accepted Answer

A) less than or equal to 
B) greater than or equal to 
C) greater than 
D) equal to 
A) less than or equal to 
B) greater than or equal to 
C) greater than 
D) equal to

Question 13

A researcher is interested in comparing the self-esteem of students who volunteer for community service versus those who do not. The researcher assumes that those who complete community service will have higher self-esteem scores. Self-esteem scores tend to be skewed (not normally distributed). The self-esteem scores appear below. Higher scores indicate higher self-esteem levels.
No Community Service Community Service
  
a) What statistical test should be used to analyze these data? 
b) Identify H0 and Ha for this study.
c) Conduct the appropriate analysis.
d) Should H0 be rejected? What should the researcher conclude?

Accepted Answer

a) What statistical test should be used

Question 14

The _____ is a nonparametric inferential test for comparing sample medians of two independent groups of scores.

Accepted Answer

A) Wilcoxon matched-pairs signed-ranks T test 
B) Wilcoxon rank-sum test 
C) χ2 test for independence 
D) χ2 goodness-of-fit test 
A) Wilcoxon matched-pairs signed-ranks T test 
B) Wilcoxon rank-sum test 
C) χ2 test for independence 
D) χ2 goodness-of-fit test

Question 15

Chi-square is calculated by summing the [(_____ - _____)2 divided by _____].

Accepted Answer

A) observed; expected; observed 
B) expected; observed; observed 
C) observed; expected; expected 
D) observed; observed; expected 
A) observed; expected; observed 
B) expected; observed; observed 
C) observed; expected; expected 
D) observed; observed; expected

Question 16

What are the assumptions of the χ2 test?

Accepted Answer

The assumptions of the χ2 test

Question 17

Which of the following is not an assumption of the Wilcoxon matched-pairs signed-ranks T test?

Accepted Answer

A) The data are ratio, interval or ordinal in scale, all of which must be converted to ranked (ordinal) data before conducting the test. 
B) The underlying distribution is not normal. 
C) The observations are independent. 
D) The other alternatives are all assumptions of the Wilcoxon matched-pairs signed-ranks test. 
A) The data are ratio, interval or ordinal in scale, all of which must be converted to ranked (ordinal) data before conducting the test. 
B) The underlying distribution is not normal. 
C) The observations are independent. 
D) The other alternatives are all assumptions of the Wilcoxon matched-pairs signed-ranks test.

Question 18

Explain when you would use the Kruskal-Wallis test versus the Friedman test.

Accepted Answer

Both tests are used with ordinal data wi

Question 19

Which of the following is not an assumption of the Wilcoxon rank-sum test?

Accepted Answer

A) The data are ratio, interval, or ordinal in scale-all of which must be converted to ranked (ordinal) data before conducting the test. 
B) The underlying distribution is not normal. 
C) The observations are independent. 
D) There is homogeneity of variance. 
A) The data are ratio, interval, or ordinal in scale-all of which must be converted to ranked (ordinal) data before conducting the test. 
B) The underlying distribution is not normal. 
C) The observations are independent. 
D) There is homogeneity of variance.

Question 20

Which of the following is not an assumption of the χ2 goodness-of-fit test?

Accepted Answer

A) It is a nonparametric test. 
B) It is appropriate only for ordinal data. 
C) The frequency in each cell should be at least 5. 
D) The sample should be randomly selected. 
A) It is a nonparametric test. 
B) It is appropriate only for ordinal data. 
C) The frequency in each cell should be at least 5. 
D) The sample should be randomly selected.

The nonparametric equivalent to the one-way repeated measures ANOVA is the _____ test.

The nonparametric equivalent to the one-way randomized ANOVA is the _____ test.

Chi-square tests are to _ data as Wilcoxon tests are to _ data.

Nonparametric is to parametric as _ is to _.

Wilcoxon rank-sum test is to _ as Wilcoxon matched-pairs signed-ranks T test is to _.

The _____ is a nonparametric inferential test for comparing sample medians of two dependent or related groups of scores.

The calculation of the df for the χ² test of independence is

What are the assumptions of the Wilcoxon rank-sum test?

The Wilcoxon tests are used with _____ data.

When using the Wilcoxon tests, the obtained value must be ______ the critical value in order to establish statistical significance.

The _____ is a nonparametric inferential test for comparing sample medians of two independent groups of scores.

Chi-square is calculated by summing the [(___ - _)² divided by ___].

What are the assumptions of the χ2 test?

Which of the following is not an assumption of the Wilcoxon matched-pairs signed-ranks T test?

Explain when you would use the Kruskal-Wallis test versus the Friedman test.

Which of the following is not an assumption of the Wilcoxon rank-sum test?

Which of the following is not an assumption of the χ² goodness-of-fit test?

Thinking Like a Scientist

Getting Started

Defining Measuring and Manipulating Variables

Descriptive Methods

Data Organization and Descriptive Statistics

Correlational Methods and Statistics

Probability and Hypothesis Testing

Introduction to Inferential Statistics

Experimental Design and Analysis I

Experimental Design and Analysis II

Experimental Design and Analysis III

Experimental Design and Analysis Iv

Quasi Experimental and Single Case Designs

APA Communication Guidelines

Filters

Exam 14: Nonparametric Inferential Statistics

The nonparametric equivalent to the one-way repeated measures ANOVA is the _____ test.

The nonparametric equivalent to the one-way randomized ANOVA is the _____ test.

Chi-square tests are to _____ data as Wilcoxon tests are to _____ data.

Nonparametric is to parametric as _____ is to _____.

Wilcoxon rank-sum test is to _____ as Wilcoxon matched-pairs signed-ranks T test is to _____.

The _____ is a nonparametric inferential test for comparing sample medians of two dependent or related groups of scores.

The calculation of the df for the χ2 test of independence is

What are the assumptions of the Wilcoxon rank-sum test?

The Wilcoxon tests are used with _____ data.

When using the Wilcoxon tests, the obtained value must be ______ the critical value in order to establish statistical significance.

The _____ is a nonparametric inferential test for comparing sample medians of two independent groups of scores.

Chi-square is calculated by summing the [(_____ - _____)2 divided by _____].

What are the assumptions of the χ2 test?

Which of the following is not an assumption of the Wilcoxon matched-pairs signed-ranks T test?

Explain when you would use the Kruskal-Wallis test versus the Friedman test.

Which of the following is not an assumption of the Wilcoxon rank-sum test?

Which of the following is not an assumption of the χ2 goodness-of-fit test?

Thinking Like a Scientist

Getting Started

Defining Measuring and Manipulating Variables

Descriptive Methods

Data Organization and Descriptive Statistics

Correlational Methods and Statistics

Probability and Hypothesis Testing

Introduction to Inferential Statistics

Experimental Design and Analysis I

Experimental Design and Analysis II

Experimental Design and Analysis III

Experimental Design and Analysis Iv

Quasi Experimental and Single Case Designs

APA Communication Guidelines

Filters

Chi-square tests are to _ data as Wilcoxon tests are to _ data.

Nonparametric is to parametric as _ is to _.

Wilcoxon rank-sum test is to _ as Wilcoxon matched-pairs signed-ranks T test is to _.

The calculation of the df for the χ² test of independence is

Chi-square is calculated by summing the [(___ - _)² divided by ___].

Which of the following is not an assumption of the χ² goodness-of-fit test?