Question 1

Nonparametric tests are appropriate to use for distributions that

Accepted Answer

A)  are skewed. 
B)  do not meet the requirements for homogeneity of variance. 
C)  are made up of scores with ordinal level data. 
D)  All of the above are true. 
A)  are skewed. 
B)  do not meet the requirements for homogeneity of variance. 
C)  are made up of scores with ordinal level data. 
D)  All of the above are true.

Question 2

Nine individuals who experience social anxiety rate their level of discomfort in various social situations on a scale from 0 to 20 with 20 representing the highest level of discomfort. They then participate in an interpersonal group therapy program for three months after which they again rate their level of discomfort. Before and after therapy ratings are shown below. Use the Wilcoxon matched-pairs signed-ranks T test to determine if the ratings after therapy were significantly different from those before therapy. Use α = .05, two-tailed.
Before: 17, 18, 14, 16, 15, 17, 12, 13, 18
After: 8, 12, 12, 16, 8, 13, 13, 6, 10

Accepted Answer

Wilcoxon matched-pairs signed-ranks T te

Question 3

Calculate the Spearman Correlation coefficient for the following ranked scores:
 $\begin{array}{cc}
\underline {\text { Rank X }} & \underline {\text { Rank Y }} \
 1 & 4 \
2 & 3 \
3 & 1 \
4 & 2 \
5 & 7 \
6 & 5 \
7 & 6
\end{array}$

Accepted Answer

Spearman c

Question 4

Which of the following tests would be appropriate to measure participants' attitude before a treatment intervention and then again after the intervention?

Accepted Answer

A)  Mann-Whitney test 
B)  Wilcoxon matched-pairs signed-ranks test 
C)  Kruskal-Wallis test 
D)  Spearman test 
A)  Mann-Whitney test 
B)  Wilcoxon matched-pairs signed-ranks test 
C)  Kruskal-Wallis test 
D)  Spearman test

Question 5

The Spearman test is the non-parametric alternative to the

Accepted Answer

A)  one-way ANOVA, independent samples design. 
B)  related samples t test. 
C)  independent samples t test. 
D)  Pearson r. 
A)  one-way ANOVA, independent samples design. 
B)  related samples t test. 
C)  independent samples t test. 
D)  Pearson r.

Question 6

What is the difference between a parametric test and a nonparametric test?

Accepted Answer

Parametric tests are based on the satisf

Question 7

In ranking the scores 6, 7, 8, 8, 9, 10, 10, 10, 11, and 12, the score of 10 is given a rank of

Accepted Answer

A)  7 
B)  6 
C)  5 
D)  6.5 
A)  7 
B)  6 
C)  5 
D)  6.5

Question 8

If the size of one or both samples is greater than _________, the sampling distribution for the Mann-Whitney U test resembles the normal distribution.

Accepted Answer

A)  5 
B)  10 
C)  15 
D)  20 
A)  5 
B)  10 
C)  15 
D)  20

Question 9

Calculate the Kruskal-Wallis H value for the following ranked scores:
 $\begin{array}{ccc}
\underline {\text { Rank }_{1}} & \underline {\text { Rank }_{2}} & \underline {\text { Rank }_{3}}\
1 & 4 & 3 \
2 & 7 & 5 \
6 & 10 & 8 \
9 & 11 & 13 \
12 & 14 & 16 \
15 & 18 & 17
\end{array}$

Accepted Answer

Kruskal-Wa

Question 10

If the assumptions of normality, homogeneity of variance, and interval or ratio level data can be met, a _______________ statistic should be used.

Accepted Answer

A)  parametric 
B)  nonparametric 
C)  descriptive 
D)  distribution-free 
A)  parametric 
B)  nonparametric 
C)  descriptive 
D)  distribution-free

Question 11

________ is the symbol used for the Mann-Whitney test.

Accepted Answer

A)  U 
B)  H 
C)  rs 
D)  T 
A)  U 
B)  H 
C)  rs 
D)  T

Question 12

Based on the critical and obtained values of the various tests below, determine if the null hypothesis can be rejected:
 $\begin{array}{|c|l|c|c|c|}
\hline & {\text { Test }} & \text { Obt Value } & \text { Crit Value } & \frac{\underline{\text { Reject } \mathrm{H}_{0}}}{\underline{\mathrm{Yes} / \mathrm{No}}} \
\hline \text { a. } & \text { Mann-Whitney test } & 6 & 8 & \
\hline \text { b. } & \text { Wilcoxon matched-pairs signed-ranks test } & 15 & 13 & \
\hline \text { c. } & \text { Kruskal-Wallis test } & 12.23 & 9.488 & \
\hline \text { d. } & \text { Spearman correlation } & .6988 & .7273 & \
\hline
\end{array}$

Accepted Answer

Reject H₀?

Question 13

Nonparametric tests are also called ____________________.

Accepted Answer

A)  norm-free 
B)  parametric-free 
C)  distribution-free 
D)  home-free 
A)  norm-free 
B)  parametric-free 
C)  distribution-free 
D)  home-free

Question 14

The ___________________ test calls for rejecting the null hypothesis if the obtained test value is ________________ than the critical value.

Accepted Answer

A)  Mann-Whitney U; greater 
B)  Spearman rs; greater 
C)  Wilcoxon T; greater 
D)  Kruskal-Wallis H; less 
A)  Mann-Whitney U; greater 
B)  Spearman rs; greater 
C)  Wilcoxon T; greater 
D)  Kruskal-Wallis H; less

Question 15

________ is the symbol used for the Wilcoxon matched-pairs signed ranks test.

Accepted Answer

A)  U 
B)  H 
C)  rs 
D)  T 
A)  U 
B)  H 
C)  rs 
D)  T

Question 16

If a researcher was interested in comparing the distributions of scores for fathers and sons, which test would be appropriate?

Accepted Answer

A)  Mann-Whitney test 
B)  Wilcoxon matched-pairs signed-ranks test 
C)  Kruskal-Wallis test 
D)  Spearman test 
A)  Mann-Whitney test 
B)  Wilcoxon matched-pairs signed-ranks test 
C)  Kruskal-Wallis test 
D)  Spearman test

Question 17

A large bicycle store is testing two newly designed bicycle seats. One sample of cyclists rates the comfort level of model A. Another sample rates the comfort level of model B. The seats are rated on a scale from 1 to 10 with 10 representing the highest level of comfort. The cyclists' ratings are shown below. Do the ratings suggest that one model is more comfortable than the other? Conduct a Mann-Whitney U test at α = .05, two-tailed.
Model A: 6, 3, 7, 5, 4, 3
Model B: 8, 6, 9, 7, 8, 7

Accepted Answer

Mann-Whitney U test:
   For n₁ = 6 and n

Question 18

Which of the following test(s) require(s) an obtained statistic that is equal to or smaller than the critical value in order to reject H₀?

Accepted Answer

A)  Mann-Whitney test 
B)  Spearman test 
C)  Wilcoxon matched-pairs signed-rank test 
D)  Both "a" and "c" above 
A)  Mann-Whitney test 
B)  Spearman test 
C)  Wilcoxon matched-pairs signed-rank test 
D)  Both "a" and "c" above

Question 19

For the Mann-Whitney test,

Accepted Answer

A)  scores from the groups are ranked separately. 
B)  it is the differences between the scores that are ranked. 
C)  difference values are determined after the scores are ranked. 
D)  scores from all groups are ranked together at the same time. 
A)  scores from the groups are ranked separately. 
B)  it is the differences between the scores that are ranked. 
C)  difference values are determined after the scores are ranked. 
D)  scores from all groups are ranked together at the same time.

Question 20

Identify three situations for which a nonparametric test would be appropriate.

Accepted Answer

A nonparametric test may be in

Nonparametric tests are appropriate to use for distributions that

Calculate the Spearman Correlation coefficient for the following ranked scores: 1 4 2 3 3 1 4 2 5 7 6 5 7 6

Which of the following tests would be appropriate to measure participants' attitude before a treatment intervention and then again after the intervention?

The Spearman test is the non-parametric alternative to the

What is the difference between a parametric test and a nonparametric test?

In ranking the scores 6, 7, 8, 8, 9, 10, 10, 10, 11, and 12, the score of 10 is given a rank of

If the size of one or both samples is greater than _________, the sampling distribution for the Mann-Whitney U test resembles the normal distribution.

Calculate the Kruskal-Wallis H value for the following ranked scores: 1 4 3 2 7 5 6 10 8 9 11 13 12 14 16 15 18 17

If the assumptions of normality, homogeneity of variance, and interval or ratio level data can be met, a _______________ statistic should be used.

________ is the symbol used for the Mann-Whitney test.

Based on the critical and obtained values of the various tests below, determine if the null hypothesis can be rejected: Test Obt Value Crit Value a. Mann-Whitney test 6 8 b. Wilcoxon matched-pairs signed-ranks test 15 13 c. Kruskal-Wallis test 12.23 9.488 d. Spearman correlation .6988 .7273

Nonparametric tests are also called ____________________.

The ___ test calls for rejecting the null hypothesis if the obtained test value is than the critical value.

________ is the symbol used for the Wilcoxon matched-pairs signed ranks test.

If a researcher was interested in comparing the distributions of scores for fathers and sons, which test would be appropriate?

Which of the following test(s) require(s) an obtained statistic that is equal to or smaller than the critical value in order to reject H₀?

For the Mann-Whitney test,

Identify three situations for which a nonparametric test would be appropriate.

Organizing Data Using Tables and Graphs

Measures of Central Tendency

Measures of Variability

Z-Scores and Other Standard Scores

Probability and the Normal Distribution

Sampling Distribution of Means

Hypothesis Testing

One-Sample T-Test

Two-Sample T-Test: Independent Samples Design

Two-Sample T-Test: Related Samples Design

Confidence Interval Versus Point Estimation

One-Way Analysis of Variance

Factorial Analysis of Variance

Correlation and Regression

Chi-Square

Introduction to Statistics

Filters

Exam 17: Nonparametric Statistics for Ordinal Data

Nonparametric tests are appropriate to use for distributions that

Calculate the Spearman Correlation coefficient for the following ranked scores: 1 4 2 3 3 1 4 2 5 7 6 5 7 6

Which of the following tests would be appropriate to measure participants' attitude before a treatment intervention and then again after the intervention?

The Spearman test is the non-parametric alternative to the

What is the difference between a parametric test and a nonparametric test?

In ranking the scores 6, 7, 8, 8, 9, 10, 10, 10, 11, and 12, the score of 10 is given a rank of

If the size of one or both samples is greater than _________, the sampling distribution for the Mann-Whitney U test resembles the normal distribution.

Calculate the Kruskal-Wallis H value for the following ranked scores: 1 4 3 2 7 5 6 10 8 9 11 13 12 14 16 15 18 17

If the assumptions of normality, homogeneity of variance, and interval or ratio level data can be met, a _______________ statistic should be used.

________ is the symbol used for the Mann-Whitney test.

Based on the critical and obtained values of the various tests below, determine if the null hypothesis can be rejected: Test Obt Value Crit Value a. Mann-Whitney test 6 8 b. Wilcoxon matched-pairs signed-ranks test 15 13 c. Kruskal-Wallis test 12.23 9.488 d. Spearman correlation .6988 .7273

Nonparametric tests are also called ____________________.

The ___________________ test calls for rejecting the null hypothesis if the obtained test value is ________________ than the critical value.

________ is the symbol used for the Wilcoxon matched-pairs signed ranks test.

If a researcher was interested in comparing the distributions of scores for fathers and sons, which test would be appropriate?

Which of the following test(s) require(s) an obtained statistic that is equal to or smaller than the critical value in order to reject H₀?

For the Mann-Whitney test,

Identify three situations for which a nonparametric test would be appropriate.

Organizing Data Using Tables and Graphs

Measures of Central Tendency

Measures of Variability

Z-Scores and Other Standard Scores

Probability and the Normal Distribution

Sampling Distribution of Means

Hypothesis Testing

One-Sample T-Test

Two-Sample T-Test: Independent Samples Design

Two-Sample T-Test: Related Samples Design

Confidence Interval Versus Point Estimation

One-Way Analysis of Variance

Factorial Analysis of Variance

Correlation and Regression

Chi-Square

Introduction to Statistics

Filters

The ___ test calls for rejecting the null hypothesis if the obtained test value is than the critical value.