Question 1

The one-sample sign test can be used for ordinal data in place of the one-sample t-test.

Accepted Answer

A) True 
 B)False

Question 2

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 3

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 4

To compute the test statistic for the Mann-Whitney U test,we sum the ranks in two groups.The test statistic is

Accepted Answer

A) the larger total 
B) the smaller total 
C) the average of the two totals 
D) the product of the two totals 
A) the larger total 
B) the smaller total 
C) the average of the two totals 
D) the product of the two totals

Question 5

Tests for ordinal data meaningfully convey information regarding ________.

Accepted Answer

A) variance 
B) differences 
C) both A and B 
A) variance 
B) differences 
C) both A and B

Question 6

Which of the following nonparametric tests can be computed using a normal appropriation formula?

Accepted Answer

A) related samples sign test 
B) Wilcoxon signed-ranks T test 
C) Mann-Whitney U test 
D) all of the above 
A) related samples sign test 
B) Wilcoxon signed-ranks T test 
C) Mann-Whitney U test 
D) all of the above

Question 7

When the null hypothesis is true and n is greater than or equal to 5 per group,the test statistic for the Friedman test is associated with ________ degrees of freedom.

Accepted Answer

A) no 
B) n ñ 1 
C) k ñ 1 
D) .05 
A) no 
B) n ñ 1 
C) k ñ 1 
D) .05

Question 8

A researcher computes a related samples sign test in which the number of positive ranks is 9 and the number of negative ranks is 3.The test statistic (x)is equal to

Accepted Answer

A) 3 
B) 9 
C) 12 
D) There is not enough information to answer this question. 
A) 3 
B) 9 
C) 12 
D) There is not enough information to answer this question.

Question 9

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 10

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

Question 11

Nonparametric tests are used when the measured data are on an ordinal scale of measurement.

Accepted Answer

A) True 
 B)False

Question 12

For a two-sample sign test,count the number of positive and negative difference scores.The larger number is the test statistic.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following best explains how to find the test statistic for the one-sample sign test?

Accepted Answer

A) Scores above the median are assigned a plus sign (+);scores below the median are assigned a negative sign (-);the test statistic is the number of pluses or minuses,whichever occurs most often. 
B) Scores are correlated as either positive (+)or negative (-);the test statistic is the extent to which scores are positively or negatively correlated. 
C) Scores are coded as being consistent (+)or inconsistent (-)with the null hypothesis;the test statistic is the number of pluses or minuses,whichever occurs most often. 
D) The variability of scores is compared with the variance stated by the null hypothesis;larger variability is considered a sign that the data are significant. 
A) Scores above the median are assigned a plus sign (+);scores below the median are assigned a negative sign (-);the test statistic is the number of pluses or minuses,whichever occurs most often. 
B) Scores are correlated as either positive (+)or negative (-);the test statistic is the extent to which scores are positively or negatively correlated. 
C) Scores are coded as being consistent (+)or inconsistent (-)with the null hypothesis;the test statistic is the number of pluses or minuses,whichever occurs most often. 
D) The variability of scores is compared with the variance stated by the null hypothesis;larger variability is considered a sign that the data are significant.

Question 14

A researcher finds that the number of scores above the median is 11 and the number of scores below the median is 5 using a sample of 16 participants.Based on these data,what is the decision for a one-sample sign test at a .05 level of significance?

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 15

Which of the following best explains how to interpret the test statistic for the Wilcoxon signed-ranks T?

Accepted Answer

A) The test statistic is interpreted the same as that for the related samples t-test. 
B) The larger the value of T,the more likely we are to reject the null hypothesis. 
C) The smaller the value of T,the more likely we are to reject the null hypothesis. 
D) We reject the null hypothesis when T is less than .05. 
A) The test statistic is interpreted the same as that for the related samples t-test. 
B) The larger the value of T,the more likely we are to reject the null hypothesis. 
C) The smaller the value of T,the more likely we are to reject the null hypothesis. 
D) We reject the null hypothesis when T is less than .05.

Question 16

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 17

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 18

The null hypothesis for the Friedman test is that the sum of ranks in each group does not differ between groups.

Accepted Answer

A) True 
 B)False

Question 19

The Mann-Whitney U is a statistical procedure used to determine whether the dispersion of ranks in two or more independent groups is equal.

Accepted Answer

A) True 
 B)False

The one-sample sign test can be used for ordinal data in place of the one-sample t-test.

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

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.

To compute the test statistic for the Mann-Whitney U test,we sum the ranks in two groups.The test statistic is

Tests for ordinal data meaningfully convey information regarding ________.

Which of the following nonparametric tests can be computed using a normal appropriation formula?

When the null hypothesis is true and n is greater than or equal to 5 per group,the test statistic for the Friedman test is associated with ________ degrees of freedom.

A researcher computes a related samples sign test in which the number of positive ranks is 9 and the number of negative ranks is 3.The test statistic (x)is equal to

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

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

Nonparametric tests are used when the measured data are on an ordinal scale of measurement.

For a two-sample sign test,count the number of positive and negative difference scores.The larger number is the test statistic.

Which of the following best explains how to find the test statistic for the one-sample sign test?

A researcher finds that the number of scores above the median is 11 and the number of scores below the median is 5 using a sample of 16 participants.Based on these data,what is the decision for a one-sample sign test at a .05 level of significance?

Which of the following best explains how to interpret the test statistic for the Wilcoxon signed-ranks T?

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

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

The null hypothesis for the Friedman test is that the sum of ranks in each group does not differ between groups.

The Mann-Whitney U is a statistical procedure used to determine whether the dispersion of ranks in two or more independent groups is equal.

Introduction to Statistics

Summarizing Data: Frequency Distributions in

Summarizing Data: Central Tendency

Summarizing Data: Variability

Probability, Normal Distributions, and Z Scores

Characteristics of the Sample Mean

Hypothesis Testing: Significance, Effect Size, and Power

Testing Means: One-Sample T Test With Confidence Intervals

Testing Means: Two- Independent-Sample T Test With Confidence Intervals

Testing Means: Related-Samples T Test With Confidence Intervals

One-Way Analysis of Variance: Between- Subjects and Within- Subjects Repeated- Measures Designs

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

Correlation and Linear Regression

Chi-Square Tests: Goodness of Fit and the Test for Independence

Chi-Square Tests: Goodness-of-Fit and Independence

Understanding Regression Analysis

Understanding Correlation Coefficients in Statistical Analysis

Filters

Exam 15: Nonparametric Tests for Ordinal Data: Understanding and Interpretation

The one-sample sign test can be used for ordinal data in place of the one-sample t-test.

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

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.

To compute the test statistic for the Mann-Whitney U test,we sum the ranks in two groups.The test statistic is

Tests for ordinal data meaningfully convey information regarding ________.

Which of the following nonparametric tests can be computed using a normal appropriation formula?

When the null hypothesis is true and n is greater than or equal to 5 per group,the test statistic for the Friedman test is associated with ________ degrees of freedom.

A researcher computes a related samples sign test in which the number of positive ranks is 9 and the number of negative ranks is 3.The test statistic (x)is equal to

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

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

Nonparametric tests are used when the measured data are on an ordinal scale of measurement.

For a two-sample sign test,count the number of positive and negative difference scores.The larger number is the test statistic.

Which of the following best explains how to find the test statistic for the one-sample sign test?

A researcher finds that the number of scores above the median is 11 and the number of scores below the median is 5 using a sample of 16 participants.Based on these data,what is the decision for a one-sample sign test at a .05 level of significance?

Which of the following best explains how to interpret the test statistic for the Wilcoxon signed-ranks T?

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

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

The null hypothesis for the Friedman test is that the sum of ranks in each group does not differ between groups.

The Mann-Whitney U is a statistical procedure used to determine whether the dispersion of ranks in two or more independent groups is equal.

Introduction to Statistics

Summarizing Data: Frequency Distributions in

Summarizing Data: Central Tendency

Summarizing Data: Variability

Probability, Normal Distributions, and Z Scores

Characteristics of the Sample Mean

Hypothesis Testing: Significance, Effect Size, and Power

Testing Means: One-Sample T Test With Confidence Intervals

Testing Means: Two- Independent-Sample T Test With Confidence Intervals

Testing Means: Related-Samples T Test With Confidence Intervals

One-Way Analysis of Variance: Between- Subjects and Within- Subjects Repeated- Measures Designs

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

Correlation and Linear Regression

Chi-Square Tests: Goodness of Fit and the Test for Independence

Chi-Square Tests: Goodness-of-Fit and Independence

Understanding Regression Analysis

Understanding Correlation Coefficients in Statistical Analysis

Filters