Question 1

When you want to know whether teachers, school Principals, and school psychologists differ in their level of commitment to test based performance, and if you have measured their commitment at the ordinal level, you have:

Accepted Answer

A)   a nominal variable with three categories of an ordinal variable
B)   an ordinal variable with three categories and an ordinal variable
C)   an interval variable with three categories and an ordinal variable
D)   a nominal variable with three categories and an ordinal variable D

Question 2

The Mann-Whitney U test tells you whether two groups differ on their responses to an:

Accepted Answer

A)   interval variable
B)   nominal variable
C)   ordinal variable
D)   both nominal and interval level variables C

Question 3

The Kruskal-Wallis test does not generate a p value to determine the level of statistical significance.

Accepted Answer

A) True 
 B)False  False

Question 4

When you have a correlation coefficient of .88 (p < .001), it means:

Accepted Answer

A)   there is a weak relationship between the variables that is statistically significant
B)   there is a moderate relationship between the variables that is not statistically significant
C)   there is a strong relationship between the variables that is statistically significant
D)   there is a moderately strong relationship between the variables

Question 5

Spearman rank correlation coefficient is used when the data are drawn from dependent samples.

Accepted Answer

A) True 
 B)False

Question 6

The Mann-Whitney U test determines:

Accepted Answer

A)   whether there is a significant relationship between a dichotomous ordinal variable and an interval variable when the data are drawn from independent samples
B)   whether there is a significant relationship between a dichotomous nominal variable and an ordinal variable when the data are drawn from independent samples
C)   whether there is a significant relationship between a dichotomous interval variable and an ordinal variable when the data are drawn from independent samples
D)   whether there is a significant relationship between a dichotomous nominal variable and an ordinal variable when the data are drawn from dependent samples

Question 7

The Spearman rank correlation coefficient ranks the study subjects on each variable and compares these ranks to compute the coefficient.

Accepted Answer

The answer of The Spearman rank correlation coefficient ranks the...

Question 8

If you are interested in determining whether there is a significant relationship between an ordinal variable and a nominal variable with more than two categories when the data are drawn from independent samples, you will employ:

Accepted Answer

A)   the Mann-Whitney U test
B)   Kruskal-Wallis one-way analysis of variance
C)   Spearman's rank correlation
D)   Wilcoxon matched-pairs signed ranks test

Question 9

When you have an ordinal variable such as order of preferences for an event and another variable such as gender that is dichotomous from independent samples, you will choose which one of the following for your statistical analysis?

Accepted Answer

A)   the one-sample t Test
B)   Pearson's product moment correlation
C)   the Mann-Whitney U Test
D)   Spearman rank correlation coefficient

Question 10

The test that can be used in a one-group pretest-posttest study in which the data on the client's behavior which is considered dependent variable is measured at the ordinal level is:

Accepted Answer

A)   the Mann-Whitney U test
B)   Spearman's rank correlation
C)   Kruskal-Wallis one-way analysis of variance
D)   Wilcoxon matched-pairs signed ranks test

Question 11

If you wanted to test the effectiveness of a program of peer mentoring in which youth at risk are matched with mentors to pursue STEM (Science, Engineering, Technology & Math) majors and stay college bound, you can measure the effectiveness of this program by asking the respondents to indicate the level of their interest in pursuing college degree. You could compute a mean rank to that interest in pursuing a college degree in the STEM field was higher after participation in the mentoring services than before. The Wilcoxon test would then determine whether the increased interest in pursuing a degree in the STEM field as indicated in the posttest ranks is significantly different from those of the pretest.

Accepted Answer

A) True 
 B)False

Question 12

In a study where school teachers were asked to rate themselves on an ordinal scale for their job satisfaction and the teachers were also asked to provide the rating for their supervisors on an ordinal scale, in order to establish if there is a correlation between these two variables you will use:

Accepted Answer

A)   the binomial test
B)   Pearson's product moment correlation
C)   Spearman's rank correlation
D)   Kruskal-Wallis one-way analysis of variance

Question 13

Spearman rank correlation generates a coefficient:

Accepted Answer

A)   that can range from 1-2 and can be either positive or negative
B)   that can range from 0 to 1.0 and can be either positive or negative
C)   that can range from 0 to 1.0 and cannot be negative
D)   that can range from 0 to -1.0 and cannot be positive

Question 14

The Mann-Whitney U test calculates a value for U from which:

Accepted Answer

A)   a p value can be derived
B)   a coefficient value can be derived
C)   a chi square value can be derived
D)   a value of r can be derived

Question 15

Explain the importance of statistical significance in Kruskal-Wallis one-way analysis of variance.

Accepted Answer

The answer of Explain the importance of statistical significance in...

Question 16

The Wilcoxon matched-pairs signed ranks test is a means of examining the relationship between a dichotomous nominal variable and an ordinal variable:

Accepted Answer

A)   when the data are drawn from independent samples
B)   when the data are drawn from same sample
C)   when the data are drawn from related samples
D)   when the data are drawn from different samples

Question 17

When you want to compare groups on a given variable such as happiness, you could first compute the mean for each group for happiness to see which group was highest and then determine whether the differences among them are significant by employing the Kruskal-Wallis one-way analysis of variance.

Accepted Answer

A) True 
 B)False

Question 18

Spearman rank correlation coefficient provides you with a coefficient for data measured at the:

Accepted Answer

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

Question 19

Statistical significance can be computed for Kruskal-Wallis one-way analysis of variance.

Accepted Answer

A) True 
 B)False

Question 20

An evaluative researcher wants to know whether three different groups of professionals employed by a child welfare agency differ with regard to their level of job satisfaction, and he/she has measured job satisfaction at the ordinal level. In this situation, you have a nominal variable with three categories and an ordinal variable. Please explain the test you will use and the rationale for the choice of your statistical test.

Accepted Answer

The answer of An evaluative researcher wants to know whether...

Exam 10: A Synopsis of Selected Statistical Tests for Examining Ordinal Data

When you want to know whether teachers, school Principals, and school psychologists differ in their level of commitment to test based performance, and if you have measured their commitment at the ordinal level, you have:

The Mann-Whitney U test tells you whether two groups differ on their responses to an:

The Kruskal-Wallis test does not generate a p value to determine the level of statistical significance.

When you have a correlation coefficient of .88 (p < .001) , it means:

Spearman rank correlation coefficient is used when the data are drawn from dependent samples.

The Mann-Whitney U test determines:

The Spearman rank correlation coefficient ranks the study subjects on each variable and compares these ranks to compute the coefficient.

If you are interested in determining whether there is a significant relationship between an ordinal variable and a nominal variable with more than two categories when the data are drawn from independent samples, you will employ:

When you have an ordinal variable such as order of preferences for an event and another variable such as gender that is dichotomous from independent samples, you will choose which one of the following for your statistical analysis?

The test that can be used in a one-group pretest-posttest study in which the data on the client's behavior which is considered dependent variable is measured at the ordinal level is:

In a study where school teachers were asked to rate themselves on an ordinal scale for their job satisfaction and the teachers were also asked to provide the rating for their supervisors on an ordinal scale, in order to establish if there is a correlation between these two variables you will use:

Spearman rank correlation generates a coefficient:

The Mann-Whitney U test calculates a value for U from which:

Explain the importance of statistical significance in Kruskal-Wallis one-way analysis of variance.

The Wilcoxon matched-pairs signed ranks test is a means of examining the relationship between a dichotomous nominal variable and an ordinal variable:

When you want to compare groups on a given variable such as happiness, you could first compute the mean for each group for happiness to see which group was highest and then determine whether the differences among them are significant by employing the Kruskal-Wallis one-way analysis of variance.

Spearman rank correlation coefficient provides you with a coefficient for data measured at the:

Statistical significance can be computed for Kruskal-Wallis one-way analysis of variance.