Question 1

The Wilcoxon Rank-Sum compares two populations based on the sum of the ________.

Accepted Answer

Ranks

Question 2

In a sign test, the test statistic is based on the _______________ distribution.

Accepted Answer

Binomial

Question 3

In the Kruskal-Wallis method, testing for differences among populations is based on the sum of the ________.

Accepted Answer

Ranks

Question 4

A study was conducted on the percent of total advertising dollars spent by ten local firms for advertising in the press and on cable television. Results were ranked with a resulting sum of squared differences equal to 128. What is the sum of the differences in ranks?

Accepted Answer

A)  128 
B)  100 
C)  0 
D)  1 
A)  128 
B)  100 
C)  0 
D)  1

Question 5

A two-tailed test of hypothesis was conducted and 60 values were above the median. The computed z = 1.90. At the 0.05 level, what is the decision regarding the null hypothesis?

Accepted Answer

A)  Reject the null hypothesis with a 0.05 Type I error rate. 
B)  Fail to reject the null hypothesis. 
C)  Reject the null hypothesis with a 0.025 Type I error rate. 
D)  None of the above. 
A)  Reject the null hypothesis with a 0.05 Type I error rate. 
B)  Fail to reject the null hypothesis. 
C)  Reject the null hypothesis with a 0.025 Type I error rate. 
D)  None of the above.

Question 6

The Wilcoxon signed rank test can replace the paired t test when the assumptions for t cannot be met.

Accepted Answer

A) True 
 B)False

Question 7

What test is an appropriate substitute for the ANOVA procedure if the assumptions for ANOVA cannot be met?

Accepted Answer

A)  z 
B)  t 
C)  Rank correlation 
D)  Kruskal-Wallis 
A)  z 
B)  t 
C)  Rank correlation 
D)  Kruskal-Wallis

Question 8

A study was conducted on the percent of total advertising dollars spent by ten local firms for advertising in the press and on cable television. Results were ranked with a resulting sum of squared differences equal to 128. What is the computed value of t?

Accepted Answer

A)  0.655. 
B)  0.804. 
C)  1.339. 
D)  0.719. 
A)  0.655. 
B)  0.804. 
C)  1.339. 
D)  0.719.

Question 9

To apply the large-sample procedure for the sign test, the sample size should be at least

Accepted Answer

A)  2 
B)  8 
C)  100 
D)  10 
A)  2 
B)  8 
C)  100 
D)  10

Question 10

To apply the Kruskal-Wallis test, the samples selected from the populations must be dependent.

Accepted Answer

A) True 
 B)False

Question 11

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

Accepted Answer

A)  61.5 
B)  163 
C)  6 
D)  253 
A)  61.5 
B)  163 
C)  6 
D)  253

Question 12

To use the sign test with paired data, trials must:

Accepted Answer

A)  Be independent. 
B)  Be dependent. 
C)  Have three or more outcomes. 
D)  Have a probability of 0.05. 
A)  Be independent. 
B)  Be dependent. 
C)  Have three or more outcomes. 
D)  Have a probability of 0.05.

Question 13

The following are the ratings (0 to 4) given by 12 individuals for two possible new flavors of soft drinks.   Wilcoxon rank-sum is to be used. What is the sum of the ranks for flavor #1?

Accepted Answer

A)  144 
B)  139 
C)  156 
D)  153 
A)  144 
B)  139 
C)  156 
D)  153

Question 14

What is the test statistic for the sign test if the sample size is large?

Accepted Answer

A)  Chi-square 
B)  Standard normal z 
C)  Binomial 
D)  Wilcoxon signed-rank 
A)  Chi-square 
B)  Standard normal z 
C)  Binomial 
D)  Wilcoxon signed-rank

Question 15

In a market research study involving nine people, seven preferred Product X and two preferred Product Y. A sign test is selected using the 0.10 level of significance. What is the decision rule if the test statistic is the number of people preferring Product X?

Accepted Answer

If 7 or mo

Question 16

What is the test statistic for Spearman's rank correlation?

Accepted Answer

A)  t 
B)  z 
C)  F 
D)  Chi-square 
A)  t 
B)  z 
C)  F 
D)  Chi-square

Question 17

Using the following data, the Wilcoxon Signed-Rank hypothesis test is used to test the hypothesis that there is no difference between the before and after populations. What are the sum of the ranks?

Accepted Answer

A)  4 and 6 
B)  5 
C)  17 
D)  6 and -11 
A)  4 and 6 
B)  5 
C)  17 
D)  6 and -11

Question 18

A soap manufacturer is experimenting with several formulas of soap powder. Three of the formulas were selected for further testing by a panel of homemakers. The ratings for the three formulas are as follows:   The soap manufacturer decided to use the Kruskal-Wallis test. What is the null hypothesis? ___________________________________

Accepted Answer

No difference in the

Question 19

In a Kruskal-Wallis test, the null hypothesis states equality among five different populations. The sample size for each population exceeds five. What is the critical value for the test using a 0.05 significance level?

Accepted Answer

A)  1.960 
B)  5.05 
C)  9.488 
D)  2.776 
A)  1.960 
B)  5.05 
C)  9.488 
D)  2.776

Question 20

What is the first step in applying the sign test?

Accepted Answer

A)  Rank the paired data from high to low or vice versa 
B)  Apply a correction factor to each observation 
C)  Determine sign of difference between each observed pair of data 
D)  Determine the number of degrees of freedom 
A)  Rank the paired data from high to low or vice versa 
B)  Apply a correction factor to each observation 
C)  Determine sign of difference between each observed pair of data 
D)  Determine the number of degrees of freedom

The Wilcoxon Rank-Sum compares two populations based on the sum of the ________.

In a sign test, the test statistic is based on the _______________ distribution.

In the Kruskal-Wallis method, testing for differences among populations is based on the sum of the ________.

A study was conducted on the percent of total advertising dollars spent by ten local firms for advertising in the press and on cable television. Results were ranked with a resulting sum of squared differences equal to 128. What is the sum of the differences in ranks?

A two-tailed test of hypothesis was conducted and 60 values were above the median. The computed z = 1.90. At the 0.05 level, what is the decision regarding the null hypothesis?

The Wilcoxon signed rank test can replace the paired t test when the assumptions for t cannot be met.

What test is an appropriate substitute for the ANOVA procedure if the assumptions for ANOVA cannot be met?

A study was conducted on the percent of total advertising dollars spent by ten local firms for advertising in the press and on cable television. Results were ranked with a resulting sum of squared differences equal to 128. What is the computed value of t?

To apply the large-sample procedure for the sign test, the sample size should be at least

To apply the Kruskal-Wallis test, the samples selected from the populations must be dependent.

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

To use the sign test with paired data, trials must:

The following are the ratings (0 to 4) given by 12 individuals for two possible new flavors of soft drinks. Wilcoxon rank-sum is to be used. What is the sum of the ranks for flavor #1?

What is the test statistic for the sign test if the sample size is large?

In a market research study involving nine people, seven preferred Product X and two preferred Product Y. A sign test is selected using the 0.10 level of significance. What is the decision rule if the test statistic is the number of people preferring Product X?

What is the test statistic for Spearman's rank correlation?

Using the following data, the Wilcoxon Signed-Rank hypothesis test is used to test the hypothesis that there is no difference between the before and after populations. What are the sum of the ranks?

In a Kruskal-Wallis test, the null hypothesis states equality among five different populations. The sample size for each population exceeds five. What is the critical value for the test using a 0.05 significance level?

What is the first step in applying the sign test?

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 compares two populations based on the sum of the ________.

In a sign test, the test statistic is based on the _______________ distribution.

In the Kruskal-Wallis method, testing for differences among populations is based on the sum of the ________.

A study was conducted on the percent of total advertising dollars spent by ten local firms for advertising in the press and on cable television. Results were ranked with a resulting sum of squared differences equal to 128. What is the sum of the differences in ranks?

A two-tailed test of hypothesis was conducted and 60 values were above the median. The computed z = 1.90. At the 0.05 level, what is the decision regarding the null hypothesis?

The Wilcoxon signed rank test can replace the paired t test when the assumptions for t cannot be met.

What test is an appropriate substitute for the ANOVA procedure if the assumptions for ANOVA cannot be met?

A study was conducted on the percent of total advertising dollars spent by ten local firms for advertising in the press and on cable television. Results were ranked with a resulting sum of squared differences equal to 128. What is the computed value of t?

To apply the large-sample procedure for the sign test, the sample size should be at least

To apply the Kruskal-Wallis test, the samples selected from the populations must be dependent.

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

To use the sign test with paired data, trials must:

The following are the ratings (0 to 4) given by 12 individuals for two possible new flavors of soft drinks. Wilcoxon rank-sum is to be used. What is the sum of the ranks for flavor #1?

What is the test statistic for the sign test if the sample size is large?

In a market research study involving nine people, seven preferred Product X and two preferred Product Y. A sign test is selected using the 0.10 level of significance. What is the decision rule if the test statistic is the number of people preferring Product X?

What is the test statistic for Spearman's rank correlation?

Using the following data, the Wilcoxon Signed-Rank hypothesis test is used to test the hypothesis that there is no difference between the before and after populations. What are the sum of the ranks?

In a Kruskal-Wallis test, the null hypothesis states equality among five different populations. The sample size for each population exceeds five. What is the critical value for the test using a 0.05 significance level?

What is the first step in applying the sign test?

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