Question 1

The Wilcoxon rank-sum test includes a variable, W. It is the sum of the observed values from the larger sample.

Accepted Answer

A) True 
 B)False

Question 2

The Kruskal-Wallis Test is the nonparametric analogy to a one-way ________.

Accepted Answer

The answer of The Kruskal-Wallis Test is the nonparametric analogy...

Question 3

If Spearman's rank correlation statistic is -0.91 with a sample size of 10, what is the test statistic value to test the hypothesis that the rank correlation coefficient is zero?

Accepted Answer

A)  -6.2080 
B)  6.2080 
C)  1.960 
D)  2.262 
A)  -6.2080 
B)  6.2080 
C)  1.960 
D)  2.262

Question 4

A hypothesis test that rho is zero is conducted at the 5% level of significance. If Spearman's (rho) is 0.86 for a sample of 15 observations, what is the computed value of the t statistic?

Accepted Answer

A)  0.456 
B)  6.08 
C)  0.425 
D)  2.16 
A)  0.456 
B)  6.08 
C)  0.425 
D)  2.16

Question 5

In a market research study involving eleven people, seven preferred Product X, three preferred Product Y and one expressed no preference. A sign test is selected using the 0.05 level of significance. What is the decision rule if the test statistic is the number of people preferring Product X?

Accepted Answer

If 9 or mo

Question 6

In the Kruskal-Wallis test for the following data, what are the degrees of freedom?

Accepted Answer

A)  5 
B)  2 
C)  16 
D)  15 
A)  5 
B)  2 
C)  16 
D)  15

Question 7

Which of the following tests is not a distribution-free test?

Accepted Answer

A)  Rank correlation 
B)  Student's t 
C)  Kruskal-Wallis 
D)  Wilcoxon rank-sum 
A)  Rank correlation 
B)  Student's t 
C)  Kruskal-Wallis 
D)  Wilcoxon rank-sum

Question 8

The test statistic for the Wilcoxon signed-rank test is the _________ statistic.

Accepted Answer

The answer of The test statistic for the Wilcoxon signed-rank...

Question 9

What kind of sign test should be applied, if H0: $\le$ 0.50, H1: $\pi$ > 0.50 and the level of significance is 0.05? ____________________

Accepted Answer

Question 10

20 economists were sampled and asked to predict if the national economy would improve during the next twelve months. Eleven of the economists predicted an increase, two economists predicted no change, and seven economists predicted a decrease in the economy. Conduct a hypothesis test at the 0.10 significance level to determine if the majority of economists predict an increase. The test statistic is:

Accepted Answer

A)  0.707 
B)  1.179 
C)  1.707 
D)  0.179 
A)  0.707 
B)  1.179 
C)  1.707 
D)  0.179

Question 11

Which of the following values of Spearman's (rho) indicates the strongest relationship between two variables?

Accepted Answer

A)  -0.91 
B)  -0.05 
C)  +0.64 
D)  +0.89 
A)  -0.91 
B)  -0.05 
C)  +0.64 
D)  +0.89

Question 12

What is the value of the Spearman rank-order correlation coefficient that indicates no association between the two variables? _____

Accepted Answer

The answer of What is the value of the Spearman...

Question 13

The Spearman coefficient of rank correlation computes the correlations for ____________ scaled data.

Accepted Answer

The answer of The Spearman coefficient of rank correlation computes...

Question 14

Two movie reviewers gave their ratings (0 to 4 stars) to seven movies released this past month as follows:   The Wilcoxon signed-rank test of difference is to be used.
What is the test statistic?

Accepted Answer

The answer of Two movie reviewers gave their ratings (0...

Question 15

In the Kruskal-Wallis test for the following data, what is the sum of the ranks for sample three?

Accepted Answer

A)  57 
B)  80 
C)  4 
D)  210 
A)  57 
B)  80 
C)  4 
D)  210

Question 16

If a sign test is applied, what is the null hypothesis for a two-tailed test?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 17

A nonparametric test

Accepted Answer

A)  assumes that the populations are normally distributed. 
B)  assumes that the populations have equal standard deviations. 
C)  makes no assumptions about the population distributions. 
D)  assumes that the populations follow a standard normal distribution. 
A)  assumes that the populations are normally distributed. 
B)  assumes that the populations have equal standard deviations. 
C)  makes no assumptions about the population distributions. 
D)  assumes that the populations follow a standard normal distribution.

Question 18

In a market research study involving eleven people, seven preferred Product X, three preferred Product Y and one expressed no preference. A sign test is selected using the 0.05 level of significance. What is the alternate hypothesis?

Accepted Answer

The answer of In a market research study involving eleven...

Question 19

Using the following data, the Wilcoxon Signed-Rank hypothesis test is used to test the hypothesis that the test results of a treatment after training are greater than the test results before the treatment. The Wilcoxon critical value is 3 for n=7 with a 0.05 significance level. What decision should be made regarding the null hypothesis?

Accepted Answer

A)  Reject the null hypothesis and conclude that the "after" is greater than "before" 
B)  Reject the null hypothesis and conclude that the "before" is greater than "after" 
C)  Fail to reject the null hypothesis 
D)  Reject the null hypothesis and conclude that there is no difference between the "before" and "after" 
A)  Reject the null hypothesis and conclude that the "after" is greater than "before" 
B)  Reject the null hypothesis and conclude that the "before" is greater than "after" 
C)  Fail to reject the null hypothesis 
D)  Reject the null hypothesis and conclude that there is no difference between the "before" and "after"

Question 20

Two movie reviewers gave their ratings (0 to 4 stars) to seven movies released this past month as follows:   The Wilcoxon signed-rank test of differences is used.
What is the null hypothesis?

Accepted Answer

No differe

The Wilcoxon rank-sum test includes a variable, W. It is the sum of the observed values from the larger sample.

The Kruskal-Wallis Test is the nonparametric analogy to a one-way ________.

If Spearman's rank correlation statistic is -0.91 with a sample size of 10, what is the test statistic value to test the hypothesis that the rank correlation coefficient is zero?

A hypothesis test that rho is zero is conducted at the 5% level of significance. If Spearman's (rho) is 0.86 for a sample of 15 observations, what is the computed value of the t statistic?

In a market research study involving eleven people, seven preferred Product X, three preferred Product Y and one expressed no preference. A sign test is selected using the 0.05 level of significance. What is the decision rule if the test statistic is the number of people preferring Product X?

In the Kruskal-Wallis test for the following data, what are the degrees of freedom?

Which of the following tests is not a distribution-free test?

The test statistic for the Wilcoxon signed-rank test is the _________ statistic.

What kind of sign test should be applied, if H₀: $\le$ 0.50, H₁: $\pi$ > 0.50 and the level of significance is 0.05? ____________________

Which of the following values of Spearman's (rho) indicates the strongest relationship between two variables?

What is the value of the Spearman rank-order correlation coefficient that indicates no association between the two variables? _____

The Spearman coefficient of rank correlation computes the correlations for ____________ scaled data.

Two movie reviewers gave their ratings (0 to 4 stars) to seven movies released this past month as follows: The Wilcoxon signed-rank test of difference is to be used. What is the test statistic?

In the Kruskal-Wallis test for the following data, what is the sum of the ranks for sample three?

If a sign test is applied, what is the null hypothesis for a two-tailed test?

A nonparametric test

In a market research study involving eleven people, seven preferred Product X, three preferred Product Y and one expressed no preference. A sign test is selected using the 0.05 level of significance. What is the alternate hypothesis?

Two movie reviewers gave their ratings (0 to 4 stars) to seven movies released this past month as follows: The Wilcoxon signed-rank test of differences is used. What is the null hypothesis?

What Is Statistics

Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

Describing Data: Numerical Measures

Describing Data: Displaying and Exploring Data

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Analysis of Variance

Correlation and Linear Regression

Multiple Regression Analysis

Index Numbers

Time Series and Forecasting

Nonparametric Methods: Goodness-Of-Fit Tests

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters

Exam 18: Nonparametric Methods: Analysis of Ranked Data

The Wilcoxon rank-sum test includes a variable, W. It is the sum of the observed values from the larger sample.

The Kruskal-Wallis Test is the nonparametric analogy to a one-way ________.

If Spearman's rank correlation statistic is -0.91 with a sample size of 10, what is the test statistic value to test the hypothesis that the rank correlation coefficient is zero?

A hypothesis test that rho is zero is conducted at the 5% level of significance. If Spearman's (rho) is 0.86 for a sample of 15 observations, what is the computed value of the t statistic?

In a market research study involving eleven people, seven preferred Product X, three preferred Product Y and one expressed no preference. A sign test is selected using the 0.05 level of significance. What is the decision rule if the test statistic is the number of people preferring Product X?

In the Kruskal-Wallis test for the following data, what are the degrees of freedom?

Which of the following tests is not a distribution-free test?

The test statistic for the Wilcoxon signed-rank test is the _________ statistic.

What kind of sign test should be applied, if H0: ≤\le≤ 0.50, H1: π\piπ > 0.50 and the level of significance is 0.05? ____________________

Which of the following values of Spearman's (rho) indicates the strongest relationship between two variables?

What is the value of the Spearman rank-order correlation coefficient that indicates no association between the two variables? _____

The Spearman coefficient of rank correlation computes the correlations for ____________ scaled data.

Two movie reviewers gave their ratings (0 to 4 stars) to seven movies released this past month as follows: The Wilcoxon signed-rank test of difference is to be used. What is the test statistic?

In the Kruskal-Wallis test for the following data, what is the sum of the ranks for sample three?

If a sign test is applied, what is the null hypothesis for a two-tailed test?

A nonparametric test

In a market research study involving eleven people, seven preferred Product X, three preferred Product Y and one expressed no preference. A sign test is selected using the 0.05 level of significance. What is the alternate hypothesis?

Two movie reviewers gave their ratings (0 to 4 stars) to seven movies released this past month as follows: The Wilcoxon signed-rank test of differences is used. What is the null hypothesis?

What Is Statistics

Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

Describing Data: Numerical Measures

Describing Data: Displaying and Exploring Data

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Analysis of Variance

Correlation and Linear Regression

Multiple Regression Analysis

Index Numbers

Time Series and Forecasting

Nonparametric Methods: Goodness-Of-Fit Tests

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters

What kind of sign test should be applied, if H₀: $\le$ 0.50, H₁: $\pi$ > 0.50 and the level of significance is 0.05? ____________________