Question 1

Rank the following scores as if to conduct a Mann-Whitney u test:
Group A: 42, 36, 37, 49, 52, 37, 41
Group B: 29, 32, 37, 40, 31, 42, 27

Accepted Answer

Rank the scores:
 $\begin{array}{cccc}
\underline { \text { Group A} } & \underline { \text { Rank} } & \underline { \text { Group B} } &\underline {  \text { Rank} } \
 36 & 5 & 27 & 1 \
37 & 7 & 29 & 2 \
37 & 7 & 31 & 3 \
41 & 10 & 32 & 4 \
42 & 11.5 & 37 & 7 \
49 & 13 & 40 & 9 \
52 & 14 & 42 & 11.5
\end{array}$

Question 2

Which nonparametric test for ordinal data uses the same distribution as chi-square if the sample size for each group is a minimum of 5?

Accepted Answer

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

Question 3

In addition to end of course evaluations of their professors, a separate survey is also administered to measure their professors' sense of humor. The Director of Institutional Effectiveness compares the ranks of both sets of scores and uses the ______________________ to determine if there is a relationship between them.

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 D

Question 4

Three groups of wine connoisseurs rated the flavor profile of the same wine on a 10-point scale with 10 being the most favorable rating. Different comments were made to each group about the wine prior to the tasting in order to determine their possible influence on the ratings. The comments were as follows:
Group A: "Don't expect much."
Group B: "Not bad."
Group C: "Exceptional."
The ratings for each group are shown below. Use the Kruskal-Wallis H test to determine if there were significant differences in the ratings. Use α = .01, two-tailed.
Group A: 4, 3, 4, 5, 6, 2, 7
Group B: 6, 7, 6, 5, 8, 7, 5
Group C: 8, 10, 7, 9, 10, 8, 7

Accepted Answer

Kruskal-Wallis H test:
 @#IMG-DLM& @#IMG-DLM& For df = 2 and

Question 5

A sample of back pain sufferers rate their level of pain on a scale from 1 to 7. They then undergo acupuncture treatment. Afterwards, they again rate their level of pain. What is the appropriate test for this study?

Accepted Answer

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

Question 6

In ranking the scores 3, 5, 5, 7, 7, 7, and 9, the score of 7 is given a rank of __________.

Accepted Answer

A)  3 
B)  4 
C)  4.5 
D)  5 
A)  3 
B)  4 
C)  4.5 
D)  5

Question 7

Two values for U are calculated for the Mann-Whitney test. Which of the following is used for comparison with Ucrit?

Accepted Answer

A)  U₁ * U₂ 
B)  the smallest U value 
C)  the largest U value 
D)  the difference between the largest and the smallest U value 
A)  U₁ * U₂ 
B)  the smallest U value 
C)  the largest U value 
D)  the difference between the largest and the smallest U value

Question 8

________ is the symbol used for the Spearman correlation test.

Accepted Answer

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

Question 9

All of the following statements are true except:

Accepted Answer

A)  Nonparametric tests should never be used if the scores can be measured on an interval or ratio scale. 
B)  Nonparametric tests can be used if a distribution is severely skewed. 
C)  Nonparametric tests can be used even if the distributions lack homogeneity of variance. 
D)  Nonparametric tests can be used for distributions that have scores that are not normally distributed. 
A)  Nonparametric tests should never be used if the scores can be measured on an interval or ratio scale. 
B)  Nonparametric tests can be used if a distribution is severely skewed. 
C)  Nonparametric tests can be used even if the distributions lack homogeneity of variance. 
D)  Nonparametric tests can be used for distributions that have scores that are not normally distributed.

Question 10

The nonparametric alternative to the Pearson correlation coefficient is the

Accepted Answer

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

Question 11

Which nonparametric test below calls for rejecting the null hypothesis if the obtained test value is less than the critical value?

Accepted Answer

A)  Wilcoxon matched-pairs signed-ranks test 
B)  Spearman test 
C)  Chi-Square test 
D)  Kruskal-Wallis test 
A)  Wilcoxon matched-pairs signed-ranks test 
B)  Spearman test 
C)  Chi-Square test 
D)  Kruskal-Wallis test

Question 12

Which of the following test(s) require(s) an obtained statistic that is equal to or greater 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)  all of the above 
A)  Mann-Whitney test 
B)  Spearman test 
C)  Wilcoxon matched-pairs signed-rank test 
D)  all of the above

Question 13

The nonparametric alternative to the related samples t test is the

Accepted Answer

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

Question 14

The nonparametric alternative to the one-way ANOVA, independent samples design is the

Accepted Answer

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

Question 15

A new pain medication is being tested. One group receives a placebo and another group receives the medication. After two weeks, both groups rate their level of pain. Which of the following should be used to analyze the data?

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 16

The __________________ test calls for rejecting the null hypothesis if the obtained test value is _____________ the critical value.

Accepted Answer

A)  Mann-Whitney U; less 
B)  Kruskal-Wallis H; greater 
C)  Wilcoxon T; greater 
D)  Both "a" and "b" are correct. 
A)  Mann-Whitney U; less 
B)  Kruskal-Wallis H; greater 
C)  Wilcoxon T; greater 
D)  Both "a" and "b" are correct.

Question 17

Annual income is known to form a skewed distribution but a researcher wants to know if there is a difference in the distributions of income for men and women in her company. She obtains a random sample of each, converts their annual income into ranks, and then uses the _____________________ test to determine if the overall salaries of one gender differ significantly from the other.

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 18

The symbol used for the ________________________ test is U.

Accepted Answer

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

Question 19

The ordinal level scores below were obtained before and after a treatment intervention. Calculate the Wilcoxon T value.
Before: 12, 15, 8, 10, 12, 7
After: 8, 12, 10, 10, 13, 5

Accepted Answer

Wilcoxon matched-pairs signed ranks T va

Question 20

The Kruskal-Wallis test would be appropriate for which of the following situations?

Accepted Answer

A)  More than two groups are involved in the study. 
B)  Two sets of scores that have been logically paired together. 
C)  Pre- and post-testing of the same participants. 
D)  Either "b" or "c" above. 
A)  More than two groups are involved in the study. 
B)  Two sets of scores that have been logically paired together. 
C)  Pre- and post-testing of the same participants. 
D)  Either "b" or "c" above.

Rank the following scores as if to conduct a Mann-Whitney u test: Group A: 42, 36, 37, 49, 52, 37, 41 Group B: 29, 32, 37, 40, 31, 42, 27

Which nonparametric test for ordinal data uses the same distribution as chi-square if the sample size for each group is a minimum of 5?

A sample of back pain sufferers rate their level of pain on a scale from 1 to 7. They then undergo acupuncture treatment. Afterwards, they again rate their level of pain. What is the appropriate test for this study?

In ranking the scores 3, 5, 5, 7, 7, 7, and 9, the score of 7 is given a rank of __________.

Two values for U are calculated for the Mann-Whitney test. Which of the following is used for comparison with U_crit?

________ is the symbol used for the Spearman correlation test.

All of the following statements are true except:

The nonparametric alternative to the Pearson correlation coefficient is the

Which nonparametric test below calls for rejecting the null hypothesis if the obtained test value is less than the critical value?

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

The nonparametric alternative to the related samples t test is the

The nonparametric alternative to the one-way ANOVA, independent samples design is the

A new pain medication is being tested. One group receives a placebo and another group receives the medication. After two weeks, both groups rate their level of pain. Which of the following should be used to analyze the data?

The ______ test calls for rejecting the null hypothesis if the obtained test value is _ the critical value.

The symbol used for the ________________________ test is U.

The ordinal level scores below were obtained before and after a treatment intervention. Calculate the Wilcoxon T value. Before: 12, 15, 8, 10, 12, 7 After: 8, 12, 10, 10, 13, 5

The Kruskal-Wallis test would be appropriate for which of the following situations?

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

Rank the following scores as if to conduct a Mann-Whitney u test: Group A: 42, 36, 37, 49, 52, 37, 41 Group B: 29, 32, 37, 40, 31, 42, 27

Which nonparametric test for ordinal data uses the same distribution as chi-square if the sample size for each group is a minimum of 5?

A sample of back pain sufferers rate their level of pain on a scale from 1 to 7. They then undergo acupuncture treatment. Afterwards, they again rate their level of pain. What is the appropriate test for this study?

In ranking the scores 3, 5, 5, 7, 7, 7, and 9, the score of 7 is given a rank of __________.

Two values for U are calculated for the Mann-Whitney test. Which of the following is used for comparison with Ucrit?

________ is the symbol used for the Spearman correlation test.

All of the following statements are true except:

The nonparametric alternative to the Pearson correlation coefficient is the

Which nonparametric test below calls for rejecting the null hypothesis if the obtained test value is less than the critical value?

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

The nonparametric alternative to the related samples t test is the

The nonparametric alternative to the one-way ANOVA, independent samples design is the

A new pain medication is being tested. One group receives a placebo and another group receives the medication. After two weeks, both groups rate their level of pain. Which of the following should be used to analyze the data?

The __________________ test calls for rejecting the null hypothesis if the obtained test value is _____________ the critical value.

The symbol used for the ________________________ test is U.

The ordinal level scores below were obtained before and after a treatment intervention. Calculate the Wilcoxon T value. Before: 12, 15, 8, 10, 12, 7 After: 8, 12, 10, 10, 13, 5

The Kruskal-Wallis test would be appropriate for which of the following situations?

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

Two values for U are calculated for the Mann-Whitney test. Which of the following is used for comparison with U_crit?

The ______ test calls for rejecting the null hypothesis if the obtained test value is _ the critical value.