Question 1

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 B

Question 2

Two movie reviewers gave their ratings (0 to 4 stars) to ten movies released this past month as follows:   The rank order correlation is to be used.
What is the critical value using a 0.05 level of significance?

Accepted Answer

2.306
Explanation: Using the Student's t distribution, the critical t value for a level of significance of 0.5 and df = 8 is 2.306.

Question 3

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 critical value at the 5% level of significance?

Accepted Answer

2
Explanation: Using the table for Wilcoxon T Values, for n = 6 and a level of significance 0.05, T = 2.

Question 4

The _____________ of the differences between "before and after" measurements is evaluated in a Wilcoxon signed-rank test.

Accepted Answer

The answer of The _____________ of the differences between "before...

Question 5

Two movie reviewers gave their ratings (0 to 4 stars) to ten movies released this past month as follows:   The rank order correlation is to be used.
What is the value of   ?

Accepted Answer

48
Explanation: As shown in th

Question 6

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 7

What is a null hypothesis for a one-tailed sign test?

Accepted Answer

A)  H0: π = 0 
B)  H0: π ≥ 1.00 
C)  H0: π = 0.50 
D)  H0: π ≤ 0.50 
A)  H0: π = 0 
B)  H0: π ≥ 1.00 
C)  H0: π = 0.50 
D)  H0: π ≤ 0.50

Question 8

The sign test is one of a few tests that can test the value of the __________.

Accepted Answer

The answer of The sign test is one of a...

Question 9

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 larger sum of the ranks?

Accepted Answer

23
Explanation: As s

Question 10

A nonparametric test cannot be applied when the data are:

Accepted Answer

A)  nominal. 
B)  ordinal. 
C)  interval. 
D)  ratio. 
A)  nominal. 
B)  ordinal. 
C)  interval. 
D)  ratio.

Question 11

A hypothesis test that a rank correlation coefficient is zero is conducted at the 5% level of significance. If the correlation coefficient is 0.50 for a sample of 15 observations, what is the computed value of the t statistic?

Accepted Answer

A)  0.456 
B)  6.08 
C)  2.082 
D)  2.2361 
A)  0.456 
B)  6.08 
C)  2.082 
D)  2.2361

Question 12

Fifty-five voters from a sample of 80 indicated that they favored casino gambling in their city. The city council is interested in finding out whether or not there is a significant difference between the proportions of those favoring and not favoring casino gambling in their community. σ in this scenario is ______.

Accepted Answer

A)  8.94 
B)  3.42 
C)  4.47 
D)  7.42 
A)  8.94 
B)  3.42 
C)  4.47 
D)  7.42

Question 13

The sign test requires the populations to be _____________.

Accepted Answer

The answer of The sign test requires the populations to...

Question 14

A hypothesis test that rho is zero is conducted at the 5% level of significance. If Spearman's (rho) is 0.75 for a sample of 15 observations, what is the computed value of the t statistic?

Accepted Answer

A)  0.456 
B)  4.088 
C)  4.391 
D)  2.236 
A)  0.456 
B)  4.088 
C)  4.391 
D)  2.236

Question 15

The Wilcoxon rank-sum uses the _____________ as the test statistic.

Accepted Answer

The answer of The Wilcoxon rank-sum uses the _____________ as...

Question 16

When testing H0: Median equals $12.40 and the alternate hypothesis: Median does not equal $12.40, what is the critical value of z at the 10% level of significance?

Accepted Answer

A)  ±1.96 
B)  ±1.65 
C)  ±2.33 
D)  ±0.10 
A)  ±1.96 
B)  ±1.65 
C)  ±2.33 
D)  ±0.10

Question 17

The Kruskal-Wallis method tests the hypothesis that ____________ or more population means are equal.

Accepted Answer

The answer of The Kruskal-Wallis method tests the hypothesis that...

Question 18

The Spearman coefficient of rank correlation is:

Accepted Answer

A)  a measure of correlation used to determine whether several population means are equal. 
B)  describes the association between sets of ranked data. 
C)  a measure of correlation based on the sign of a difference between two related observations. 
D)  is a goodness-of-fit test used to test for normality. 
A)  a measure of correlation used to determine whether several population means are equal. 
B)  describes the association between sets of ranked data. 
C)  a measure of correlation based on the sign of a difference between two related observations. 
D)  is a goodness-of-fit test used to test for normality.

Question 19

Which of the following statements is true regarding the sign test?

Accepted Answer

A)  It is based on the sign of the differences. 
B)  It is used with independent populations. 
C)  The chi-square is used as the test statistic. 
D)  The "T" statistic is the test statistic. 
A)  It is based on the sign of the differences. 
B)  It is used with independent populations. 
C)  The chi-square is used as the test statistic. 
D)  The "T" statistic is the test statistic.

Question 20

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:   If H is less than the critical value, what is our decision rule?

Accepted Answer

Do not reject H₀; no

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

Two movie reviewers gave their ratings (0 to 4 stars) to ten movies released this past month as follows: The rank order correlation is to be used. What is the critical value using a 0.05 level of significance?

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 critical value at the 5% level of significance?

The _____________ of the differences between "before and after" measurements is evaluated in a Wilcoxon signed-rank test.

Two movie reviewers gave their ratings (0 to 4 stars) to ten movies released this past month as follows: The rank order correlation is to be used. What is the value of ?

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

What is a null hypothesis for a one-tailed sign test?

The sign test is one of a few tests that can test the value of the __________.

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 larger sum of the ranks?

A nonparametric test cannot be applied when the data are:

A hypothesis test that a rank correlation coefficient is zero is conducted at the 5% level of significance. If the correlation coefficient is 0.50 for a sample of 15 observations, what is the computed value of the t statistic?

The sign test requires the populations to be _____________.

A hypothesis test that rho is zero is conducted at the 5% level of significance. If Spearman's (rho) is 0.75 for a sample of 15 observations, what is the computed value of the t statistic?

The Wilcoxon rank-sum uses the _____________ as the test statistic.

When testing H₀: Median equals $12.40 and the alternate hypothesis: Median does not equal $12.40, what is the critical value of z at the 10% level of significance?

The Kruskal-Wallis method tests the hypothesis that ____________ or more population means are equal.

The Spearman coefficient of rank correlation is:

Which of the following statements is true regarding the sign test?

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: If H is less than the critical value, what is our decision rule?

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

Nonparametric Methods: Nominal Level Hypothesis Tests

Index Numbers

Time Series and Forecasting

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters

Exam 16: Nonparametric Methods: Analysis of Ordinal Data

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

Two movie reviewers gave their ratings (0 to 4 stars) to ten movies released this past month as follows: The rank order correlation is to be used. What is the critical value using a 0.05 level of significance?

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 critical value at the 5% level of significance?

The _____________ of the differences between "before and after" measurements is evaluated in a Wilcoxon signed-rank test.

Two movie reviewers gave their ratings (0 to 4 stars) to ten movies released this past month as follows: The rank order correlation is to be used. What is the value of ?

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

What is a null hypothesis for a one-tailed sign test?

The sign test is one of a few tests that can test the value of the __________.

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 larger sum of the ranks?

A nonparametric test cannot be applied when the data are:

A hypothesis test that a rank correlation coefficient is zero is conducted at the 5% level of significance. If the correlation coefficient is 0.50 for a sample of 15 observations, what is the computed value of the t statistic?

The sign test requires the populations to be _____________.

A hypothesis test that rho is zero is conducted at the 5% level of significance. If Spearman's (rho) is 0.75 for a sample of 15 observations, what is the computed value of the t statistic?

The Wilcoxon rank-sum uses the _____________ as the test statistic.

When testing H0: Median equals $12.40 and the alternate hypothesis: Median does not equal $12.40, what is the critical value of z at the 10% level of significance?

The Kruskal-Wallis method tests the hypothesis that ____________ or more population means are equal.

The Spearman coefficient of rank correlation is:

Which of the following statements is true regarding the sign test?

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: If H is less than the critical value, what is our decision rule?

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

Nonparametric Methods: Nominal Level Hypothesis Tests

Index Numbers

Time Series and Forecasting

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters

When testing H₀: Median equals $12.40 and the alternate hypothesis: Median does not equal $12.40, what is the critical value of z at the 10% level of significance?