Question 1

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

Accepted Answer

A)  retain the null hypothesis 
B)  reject the null hypothesis 
C)  not enough information 
A)  retain the null hypothesis 
B)  reject the null hypothesis 
C)  not enough information

Question 2

Each of the following is an appropriate test for ordinal data,except ______.

Accepted Answer

A)  the Mann-Whitney U test 
B)  the chi-square goodness-of-fit test 
C)  the one-sample sign test 
D)  the Friedman test 
A)  the Mann-Whitney U test 
B)  the chi-square goodness-of-fit test 
C)  the one-sample sign test 
D)  the Friedman test

Question 3

Which of the following gives the best explanation for why it would be advantageous to convert the following scores to ordinal data?

Accepted Answer

A)  because the data are normally distributed 
B)  because the data are split into two groups 
C)  because there is an outlier in the data for Group 2 
D)  because parametric tests are always preferred to nonparametric tests 
A)  because the data are normally distributed 
B)  because the data are split into two groups 
C)  because there is an outlier in the data for Group 2 
D)  because parametric tests are always preferred to nonparametric tests

Question 4

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

Accepted Answer

A)  A, B, A, B, A, B, A, B 
B)  A, A, B, B, A, B, B, A 
C)  B, A, B, A, A, B, A, B 
D)  A, A, A, A, B, B, B, B 
A)  A, B, A, B, A, B, A, B 
B)  A, A, B, B, A, B, B, A 
C)  B, A, B, A, A, B, A, B 
D)  A, A, A, A, B, B, B, B

Question 5

The Wilcoxon signed-ranks T is a statistical procedure used to determine whether the total ranks in two related groups are significantly different.

Accepted Answer

A) True 
 B)False

Question 6

The Mann-Whitney U test is used as a nonparametric alternative to which parametric test?

Accepted Answer

A)  one-sample t test 
B)  two-independent-sample t test 
C)  related-samples t test 
D)  one-sample t test and related-samples t test 
A)  one-sample t test 
B)  two-independent-sample t test 
C)  related-samples t test 
D)  one-sample t test and related-samples t test

Question 7

A researcher computes a one-sample sign test in which the number of pluses is 8,the number of minuses is 2,and the number of scores equal to the median is 1.The test statistic (x)for the sign test is equal to ______.

Accepted Answer

A)  1 
B)  2 
C)  8 
D)  there is not enough information to answer this question 
A)  1 
B)  2 
C)  8 
D)  there is not enough information to answer this question

Question 8

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

Accepted Answer

A)  significance 
B)  effect size 
C)  variability 
D)  all of these 
A)  significance 
B)  effect size 
C)  variability 
D)  all of these

Question 9

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

Accepted Answer

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

Question 10

We compare the test statistic of a Kruskal-Wallis H test to the critical value given in the table for which hypothesis test?

Accepted Answer

A)  the analysis of variance 
B)  the t test 
C)  the chi-square test 
D)  the Pearson correlation 
A)  the analysis of variance 
B)  the t test 
C)  the chi-square test 
D)  the Pearson correlation

Question 11

For a Mann-Whitney U test,the more lopsided the dispersion of scores between groups,the more likely we are to reject the null hypothesis.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following dispersions of scores for three groups (A,B,and C)best illustrate the null hypothesis for a Kruskal-Wallis H test?

Accepted Answer

A)  The number of scores above and below the median are equal. 
B)  The mean differences between two groups are equal. 
C)  The sum of ranks in each group does not differ between groups. 
D)  The ranks in two groups are equal to 0. 
A)  The number of scores above and below the median are equal. 
B)  The mean differences between two groups are equal. 
C)  The sum of ranks in each group does not differ between groups. 
D)  The ranks in two groups are equal to 0.

Question 13

The test statistic (x)for the sign test is equal to ______.

Accepted Answer

A)  variability attributed to the groups divided by variability attributed to error 
B)  the number of pluses or minuses, whichever occurs most often 
C)  the number of scores that are less than or equal to the median value 
D)  the number of positive scores divided by the number of negative scores 
A)  variability attributed to the groups divided by variability attributed to error 
B)  the number of pluses or minuses, whichever occurs most often 
C)  the number of scores that are less than or equal to the median value 
D)  the number of positive scores divided by the number of negative scores

Question 14

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

Accepted Answer

A)  Mann-Whitney U test 
B)  related-samples sign test 
C)  Wilcoxon signed-ranks T test 
D)  Friedman test 
A)  Mann-Whitney U test 
B)  related-samples sign test 
C)  Wilcoxon signed-ranks T test 
D)  Friedman test

Question 15

The sign test can be used as an alternative to the one-sample t test and the two-independent-sample t test.

Accepted Answer

A) True 
 B)False

Question 16

When the test statistic for the Friedman test is equal to or smaller than the critical value,we reject the null hypothesis.

Accepted Answer

A) True 
 B)False

Question 17

For a Wilcoxon signed-ranks T test,we decide to reject the null hypothesis when T is larger than the critical value.

Accepted Answer

A) True 
 B)False

Question 18

A researcher compares the ranks in four groups and computes H = 6.55 for the Kruskal-Wallis H test.What is the decision for this test?

Accepted Answer

A)  retain the null hypothesis 
B)  reject the null hypothesis 
C)  there is not enough information to answer this question 
A)  retain the null hypothesis 
B)  reject the null hypothesis 
C)  there is not enough information to answer this question

Question 19

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

Accepted Answer

A)  decrease 
B)  increase 
C)  have no effect on 
D)  categorize 
A)  decrease 
B)  increase 
C)  have no effect on 
D)  categorize

Question 20

For the Mann-Whitney U test,we reject the null hypothesis when ______.

Accepted Answer

A)  values of U are greater than or equal to the critical value 
B)  values of U are less than or equal to .05 
C)  values of U are less than or equal to the critical value 
D)  values of U are closer to ± 1.0 
A)  values of U are greater than or equal to the critical value 
B)  values of U are less than or equal to .05 
C)  values of U are less than or equal to the critical value 
D)  values of U are closer to ± 1.0

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

Each of the following is an appropriate test for ordinal data,except ______.

Which of the following gives the best explanation for why it would be advantageous to convert the following scores to ordinal data?

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

The Wilcoxon signed-ranks T is a statistical procedure used to determine whether the total ranks in two related groups are significantly different.

The Mann-Whitney U test is used as a nonparametric alternative to which parametric test?

A researcher computes a one-sample sign test in which the number of pluses is 8,the number of minuses is 2,and the number of scores equal to the median is 1.The test statistic (x)for the sign test is equal to ______.

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

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

We compare the test statistic of a Kruskal-Wallis H test to the critical value given in the table for which hypothesis test?

For a Mann-Whitney U test,the more lopsided the dispersion of scores between groups,the more likely we are to reject the null hypothesis.

Which of the following dispersions of scores for three groups (A,B,and C)best illustrate the null hypothesis for a Kruskal-Wallis H test?

The test statistic (x)for the sign test is equal to ______.

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

The sign test can be used as an alternative to the one-sample t test and the two-independent-sample t test.

When the test statistic for the Friedman test is equal to or smaller than the critical value,we reject the null hypothesis.

For a Wilcoxon signed-ranks T test,we decide to reject the null hypothesis when T is larger than the critical value.

A researcher compares the ranks in four groups and computes H = 6.55 for the Kruskal-Wallis H test.What is the decision for this test?

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

For the Mann-Whitney U test,we reject the null hypothesis when ______.

Introduction to Statistics

Summarizing Data: Frequency Distributions in Tables and Graphs

Summarizing Data: Central Tendency

Summarizing Data: Variability

Probability

Probability, normal Distributions, and Z Scores

Probability and Sampling Distributions

Hypothesis Testing: Significance,effect Size,and Power

Testing Means: One-Sample and Two-Independent-Sample T Tests

Testing Means: Truehe Related-Samples T Test

Estimation and Confidence Intervals

Analysis of Variance: One-Way Between-Subjects Design

Analysis of Variance: One-Way Within-Subjects Repeated-Measuresdesign

Analysis of Variance: Two-Way Between-Subjects Factorial Design

Correlation

Linear Regression and Multiple Regression

Nonparametric Tests: Chi-Square Tests

Filters

Exam 18: Nonparametric Tests: Tests for Ordinal Data

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

Each of the following is an appropriate test for ordinal data,except ______.

Which of the following gives the best explanation for why it would be advantageous to convert the following scores to ordinal data?

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

The Wilcoxon signed-ranks T is a statistical procedure used to determine whether the total ranks in two related groups are significantly different.

The Mann-Whitney U test is used as a nonparametric alternative to which parametric test?

A researcher computes a one-sample sign test in which the number of pluses is 8,the number of minuses is 2,and the number of scores equal to the median is 1.The test statistic (x)for the sign test is equal to ______.

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

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

We compare the test statistic of a Kruskal-Wallis H test to the critical value given in the table for which hypothesis test?

For a Mann-Whitney U test,the more lopsided the dispersion of scores between groups,the more likely we are to reject the null hypothesis.

Which of the following dispersions of scores for three groups (A,B,and C)best illustrate the null hypothesis for a Kruskal-Wallis H test?

The test statistic (x)for the sign test is equal to ______.

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

The sign test can be used as an alternative to the one-sample t test and the two-independent-sample t test.

When the test statistic for the Friedman test is equal to or smaller than the critical value,we reject the null hypothesis.

For a Wilcoxon signed-ranks T test,we decide to reject the null hypothesis when T is larger than the critical value.

A researcher compares the ranks in four groups and computes H = 6.55 for the Kruskal-Wallis H test.What is the decision for this test?

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

For the Mann-Whitney U test,we reject the null hypothesis when ______.

Introduction to Statistics

Summarizing Data: Frequency Distributions in Tables and Graphs

Summarizing Data: Central Tendency

Summarizing Data: Variability

Probability

Probability, normal Distributions, and Z Scores

Probability and Sampling Distributions

Hypothesis Testing: Significance,effect Size,and Power

Testing Means: One-Sample and Two-Independent-Sample T Tests

Testing Means: Truehe Related-Samples T Test

Estimation and Confidence Intervals

Analysis of Variance: One-Way Between-Subjects Design

Analysis of Variance: One-Way Within-Subjects Repeated-Measuresdesign

Analysis of Variance: Two-Way Between-Subjects Factorial Design

Correlation

Linear Regression and Multiple Regression

Nonparametric Tests: Chi-Square Tests

Filters