Question 1

Spearman rs values can be less than zero.

Accepted Answer

A) True 
 B)False

Question 2

The Mann-Whitney U test is used for paired samples.

Accepted Answer

A) True 
 B)False

Question 3

Suppose you obtained a Spearman rs of .53 from a sample of 13 pairs of scores. For a two-tailed test, such a correlation coefficient is

Accepted Answer

A)  significant at the .05 level 
B)  significant at the .01 level 
C)  significant at the .001 level 
D)  not statistically significant. 
A)  significant at the .05 level 
B)  significant at the .01 level 
C)  significant at the .001 level 
D)  not statistically significant.

Question 4

To test for the differences among all possible pairs of independent samples, use a

Accepted Answer

A)  Mann-Whitney U test 
B)  Wilcoxon matched-pairs signed-ranks T test 
C)  Wilcoxon-Wilcox multiple comparisons test 
D)  Spearman rs.. 
A)  Mann-Whitney U test 
B)  Wilcoxon matched-pairs signed-ranks T test 
C)  Wilcoxon-Wilcox multiple comparisons test 
D)  Spearman rs..

Question 5

If you have one difference score of 0, it should be kept in the analysis for

Accepted Answer

A)  Wilcoxon matched-pairs signed-ranks T test 
B)  Spearman rs 
C)  both of the descriptive alternatives are correct 
D)  neither of the descriptive alternatives is correct. 
A)  Wilcoxon matched-pairs signed-ranks T test 
B)  Spearman rs 
C)  both of the descriptive alternatives are correct 
D)  neither of the descriptive alternatives is correct.

Question 6

With scores of 2, 2, 3, 3, 4, 5, a score of 3 has a rank of 3.

Accepted Answer

A) True 
 B)False

Question 7

Nonparametric tests do not assume that the populations being sampled from are normally distributed nor that they have equal variances.

Accepted Answer

A) True 
 B)False

Question 8

The number of independent variables in a Wilcoxon matched-pairs signed-ranks T test is one.

Accepted Answer

A) True 
 B)False

Question 9

The more powerful test is the one that is more likely to

Accepted Answer

A)  retain H0 when it is true 
B)  reject H0 when it is false 
C)  both descriptive alternatives are correct 
D)  neither descriptive alternatives is correct. 
A)  retain H0 when it is true 
B)  reject H0 when it is false 
C)  both descriptive alternatives are correct 
D)  neither descriptive alternatives is correct.

Question 10

The Mann-Whitney U test is to the Wilcoxon matched-pairs signed-ranks T as

Accepted Answer

A)  retain is to reject 
B)  r is to F 
C)  a priori is to post hoc 
D)  independent-samples t is to paired-samples t. 
A)  retain is to reject 
B)  r is to F 
C)  a priori is to post hoc 
D)  independent-samples t is to paired-samples t.

Question 11

Which of the following questions did your author address in his final word?

Accepted Answer

A)  Is statistics the best way to answer empirical questions? 
B)  What should you do about the fact that nothing is ever proved using statistics? 
C)  Is .05 reasonable as a universal cut-off point for rejecting the null hypothesis? 
D)  What things are better understood when translated into numbers? 
A)  Is statistics the best way to answer empirical questions? 
B)  What should you do about the fact that nothing is ever proved using statistics? 
C)  Is .05 reasonable as a universal cut-off point for rejecting the null hypothesis? 
D)  What things are better understood when translated into numbers?

Question 12

Controversy exists over the relative merits of parametric and nonparametric tests with respect to power.

Accepted Answer

A) True 
 B)False

Question 13

The number of independent variables in a Wilcoxon-Wilcox multiple comparisons test is one.

Accepted Answer

A) True 
 B)False

Question 14

The tests described in Chapter 15 are null hypothesis statistical testing techniques.

Accepted Answer

A) True 
 B)False

Question 15

Controversy over the relative merits of parametric and nonparametric tests exists with respect to

Accepted Answer

A)  whether to use a random sample 
B)  power 
C)  both whether to use a random sample and power 
D)  neither whether to use a random sample nor power. 
A)  whether to use a random sample 
B)  power 
C)  both whether to use a random sample and power 
D)  neither whether to use a random sample nor power.

Question 16

Here are some data based on a study by St. Leger, et al. (1978 and described in Howell, 1995). The data come from 10 countries. One variable is the number of physicians per 10,000 population. The other variable is an infant mortality rate that is adjusted so that the wealth of the country is not being measured. Describe in words, the relationship between these two variables after you have made the appropriate calculations. (Concept taken from Howell's statistics book.) $$\begin{array} { c c } 
\text { Physicians/ } 10,000 & \text { Infant Mortality } \
\hline29 & 31 \
33 & 28 \
36 & 39 \
37 & 37 \
40 & 44 \
42 & 41 \
45 & 51 \
47 & 50 \
48 & 56 \
56 & 49
\end{array}$$

Accepted Answer

\[\begin{array}{l}
\begin{array} { l l c

Question 17

If the populations being compared are normally distributed and have equal variances, the most powerful statistical test is a  test.

Accepted Answer

A)  descriptive 
B)  parametric 
C)  nonparametric 
D)  orthogonal. 
A)  descriptive 
B)  parametric 
C)  nonparametric 
D)  orthogonal.

Question 18

Both parametric and nonparametric tests require you to assume that the dependent variable scores are

Accepted Answer

A)  normally distributed 
B)  have equal variances 
C)  both of the descriptive alternatives are correct 
D)  neither of the descriptive alternatives is correct. 
A)  normally distributed 
B)  have equal variances 
C)  both of the descriptive alternatives are correct 
D)  neither of the descriptive alternatives is correct.

Question 19

With scores of 2, 2, 4, 4, 5, a score of 4 has a rank of 3.

Accepted Answer

A) True 
 B)False

Question 20

A social psychologist generalized from rat speeds in a runway to college students going home for Christmas. Of particular interest was speed far from the goal (near school) and speed near the goal (home). As a reliable measure of speed he used gasoline consumption in mpg. Analyze the data below for the nine students in an Advanced Social Psychology class with a nonparametric test. Write a sentence that tells what the study showed. $$\begin{array} { c c } 
\text { mpg. Far From Goal } & \text { mpg. Near Goal } \
\hline18 & 20 \
23 & 20 \
31 & 31 \
18 & 19 \
24 & 19 \
38 & 30 \
27 & 20 \
18 & 16 \
26 & 21
\end{array}$$

Accepted Answer

\[\begin{array} { l l l } 
\text { D } &

Spearman r_svalues can be less than zero.

The Mann-Whitney U test is used for paired samples.

Suppose you obtained a Spearman r_s of .53 from a sample of 13 pairs of scores. For a two-tailed test, such a correlation coefficient is

To test for the differences among all possible pairs of independent samples, use a

If you have one difference score of 0, it should be kept in the analysis for

With scores of 2, 2, 3, 3, 4, 5, a score of 3 has a rank of 3.

Nonparametric tests do not assume that the populations being sampled from are normally distributed nor that they have equal variances.

The number of independent variables in a Wilcoxon matched-pairs signed-ranks T test is one.

The more powerful test is the one that is more likely to

The Mann-Whitney U test is to the Wilcoxon matched-pairs signed-ranks T as

Which of the following questions did your author address in his final word?

Controversy exists over the relative merits of parametric and nonparametric tests with respect to power.

The number of independent variables in a Wilcoxon-Wilcox multiple comparisons test is one.

The tests described in Chapter 15 are null hypothesis statistical testing techniques.

Controversy over the relative merits of parametric and nonparametric tests exists with respect to

If the populations being compared are normally distributed and have equal variances, the most powerful statistical test is a test.

Both parametric and nonparametric tests require you to assume that the dependent variable scores are

With scores of 2, 2, 4, 4, 5, a score of 4 has a rank of 3.

Introduction

Exploring Data: Frequency Distributions and Graphs

Exploring Data: Central Tendency

Exploring Data: Variability

Other Descriptive Statistics

Correlation and Regression

Theoretical Distributions Including the Normal Distribution

Samples, Sampling Distributions, and Confidence Intervals

Hypothesis Testing and Effect Size: One-Sample Designs

Hypothesis Testing, Effect Size, and and Confidence Intervals: Two-Sample Designs

Analysis of Variance: One-Way Classification

Analysis of Variance: One-Factor Repeated Measures

Analysis of Variance: Factorial Design

Chi Square Tests

Appendix: Grouped Frequency Distributions and Central Tendency

Filters

Exam 15: More Nonparametric Tests

Spearman rs values can be less than zero.

The Mann-Whitney U test is used for paired samples.

Suppose you obtained a Spearman rs of .53 from a sample of 13 pairs of scores. For a two-tailed test, such a correlation coefficient is

To test for the differences among all possible pairs of independent samples, use a

If you have one difference score of 0, it should be kept in the analysis for

With scores of 2, 2, 3, 3, 4, 5, a score of 3 has a rank of 3.

Nonparametric tests do not assume that the populations being sampled from are normally distributed nor that they have equal variances.

The number of independent variables in a Wilcoxon matched-pairs signed-ranks T test is one.

The more powerful test is the one that is more likely to

The Mann-Whitney U test is to the Wilcoxon matched-pairs signed-ranks T as

Which of the following questions did your author address in his final word?

Controversy exists over the relative merits of parametric and nonparametric tests with respect to power.

The number of independent variables in a Wilcoxon-Wilcox multiple comparisons test is one.

The tests described in Chapter 15 are null hypothesis statistical testing techniques.

Controversy over the relative merits of parametric and nonparametric tests exists with respect to

If the populations being compared are normally distributed and have equal variances, the most powerful statistical test is a test.

Both parametric and nonparametric tests require you to assume that the dependent variable scores are

With scores of 2, 2, 4, 4, 5, a score of 4 has a rank of 3.

Introduction

Exploring Data: Frequency Distributions and Graphs

Exploring Data: Central Tendency

Exploring Data: Variability

Other Descriptive Statistics

Correlation and Regression

Theoretical Distributions Including the Normal Distribution

Samples, Sampling Distributions, and Confidence Intervals

Hypothesis Testing and Effect Size: One-Sample Designs

Hypothesis Testing, Effect Size, and and Confidence Intervals: Two-Sample Designs

Analysis of Variance: One-Way Classification

Analysis of Variance: One-Factor Repeated Measures

Analysis of Variance: Factorial Design

Chi Square Tests

Appendix: Grouped Frequency Distributions and Central Tendency

Filters

Spearman r_svalues can be less than zero.

Suppose you obtained a Spearman r_s of .53 from a sample of 13 pairs of scores. For a two-tailed test, such a correlation coefficient is