Question 1

The nonparametric alternative to analysis of variance for a randomized block design is the Friedman test.

Accepted Answer

A) True 
 B)False

Question 2

The nonparametric counterpart of the t test to compare the means of two related samples is the ___.

Accepted Answer

A) chi-square goodness-of-fit test 
B) chi-square test of independence 
C) Mann-Whitney U test 
D) Wilcoxon test 
E) Friedman test 
A) chi-square goodness-of-fit test 
B) chi-square test of independence 
C) Mann-Whitney U test 
D) Wilcoxon test 
E) Friedman test

Question 3

The one-sample runs test is a nonparametric test for sequential independence.

Accepted Answer

A) True 
 B)False

Question 4

The Wilcoxon test was used on 18 pairs of data.The total of the ranks (T)were computed to be 111 (for + ranks)and 60 (for - ranks).The z value for this test is ___.

Accepted Answer

A) -1.11 
B) -0.05 
C) -0.07 
D) 0.033 
E) 2.22 
A) -1.11 
B) -0.05 
C) -0.07 
D) 0.033 
E) 2.22

Question 5

Nonparametric statistics are sometimes called distribution-dependent statistics.

Accepted Answer

A) True 
 B)False

Question 6

The appropriate test for comparing the means of two populations using ordinal-level data from two independent samples is the Mann-Whitney U test.

Accepted Answer

A) True 
 B)False

Question 7

In a Friedman test with 8 treatment levels and 5 blocks,df = ___.

Accepted Answer

A) 28 
B) 40 
C) 8 
D) 7 
E) 6 
A) 28 
B) 40 
C) 8 
D) 7 
E) 6

Question 8

Most "before and after" types of experiments should be analyzed using ___.

Accepted Answer

A) chi-square goodness-of-fit test 
B) Kruskal-Wallis test 
C) Mann-Whitney U test 
D) Wilcoxon test 
E) Friedman test 
A) chi-square goodness-of-fit test 
B) Kruskal-Wallis test 
C) Mann-Whitney U test 
D) Wilcoxon test 
E) Friedman test

Question 9

In a Friedman test with 6 treatment levels and 7 blocks,the df = ___.

Accepted Answer

A) 6 
B) 5 
C) 42 
D) 41 
E) 7 
A) 6 
B) 5 
C) 42 
D) 41 
E) 7

Question 10

Correlation coefficient cannot be used to analyze the association between two variables when only ordinal-level data are available.

Accepted Answer

A) True 
 B)False

Question 11

In the Friedman test of c treatment levels,the degrees of freedom will be ___.

Accepted Answer

A) n - 1 
B) (r - 1)(c - 1) 
C) c - 1 
D) b - k - 1 
E) c + 1 
A) n - 1 
B) (r - 1)(c - 1) 
C) c - 1 
D) b - k - 1 
E) c + 1

Question 12

When using the Friedman test to test the following data to determine whether there is a significant difference between treatment levels,the ranks for block 1 are ___.

Accepted Answer

A) 2,3,4,1 
B) 3,4,1,2 
C) 4,1,2,3 
D) 4,2,3,1 
E) 1,2,3,4 
A) 2,3,4,1 
B) 3,4,1,2 
C) 4,1,2,3 
D) 4,2,3,1 
E) 1,2,3,4

Question 13

The null hypothesis for a one-sample runs test is ___.

Accepted Answer

A) "the observations in the sample are randomly generated" 
B) "the observations in the sample are not correlated" 
C) "the observations in the sample are statistically independent" 
D) "the observations in the sample are cross-linked" 
E) "the observations are systematically generated" 
A) "the observations in the sample are randomly generated" 
B) "the observations in the sample are not correlated" 
C) "the observations in the sample are statistically independent" 
D) "the observations in the sample are cross-linked" 
E) "the observations are systematically generated"

Question 14

The nonparametric counterpart of the t test to compare the means of two independent populations is the Mann-Whitney U test.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following is not an assumption of the Friedman test?

Accepted Answer

A) The blocks are independent. 
B) The population has a normal distribution. 
C) There is no interaction between blocks and treatments. 
D) Observations within each block can be ranked. 
A) The blocks are independent. 
B) The population has a normal distribution. 
C) There is no interaction between blocks and treatments. 
D) Observations within each block can be ranked.

Question 16

Which of the following tests should be used to compare the means of two populations if the samples are related?

Accepted Answer

A) Mann-Whitney test 
B) Wilcoxon test 
C) Runs test 
D) Spearman's test 
E) Kruskal-Wallis test 
A) Mann-Whitney test 
B) Wilcoxon test 
C) Runs test 
D) Spearman's test 
E) Kruskal-Wallis test

Question 17

Two stock analysts rank five investment portfolios for overall performance and risk.   The Spearman rank correlation coefficient is ___.

Accepted Answer

A) 0.80 
B) 0.20 
C) 0.05 
D) 0.95 
E) 1.00 
A) 0.80 
B) 0.20 
C) 0.05 
D) 0.95 
E) 1.00

Question 18

In the Wilcoxon test of the differences between two populations,the value z statistic was calculated to be 1.80.If the level of significance is 0.05,which of the following decisions is appropriate?

Accepted Answer

A) Reject the null hypothesis. 
B) Do not reject the null hypothesis. 
C) indeterminate without the sample size 
D) indeterminate without all of the data 
E) inconclusive 
A) Reject the null hypothesis. 
B) Do not reject the null hypothesis. 
C) indeterminate without the sample size 
D) indeterminate without all of the data 
E) inconclusive

Question 19

A Kruskal-Wallis test is to be performed.There will be five categories,and alpha is chosen to be 0.01.The critical chi-square value is ___.

Accepted Answer

A) 15.086 
B) 13.277 
C) 7.779 
D) 9.236 
E) 8.987 
A) 15.086 
B) 13.277 
C) 7.779 
D) 9.236 
E) 8.987

Question 20

The appropriate test for comparing the means of two populations using ordinal-level data from two related samples is the Wilcoxon test and not Mann-Whitney U test.

Accepted Answer

A) True 
 B)False

The nonparametric alternative to analysis of variance for a randomized block design is the Friedman test.

The nonparametric counterpart of the t test to compare the means of two related samples is the ___.

The one-sample runs test is a nonparametric test for sequential independence.

The Wilcoxon test was used on 18 pairs of data.The total of the ranks (T)were computed to be 111 (for + ranks)and 60 (for - ranks).The z value for this test is ___.

Nonparametric statistics are sometimes called distribution-dependent statistics.

The appropriate test for comparing the means of two populations using ordinal-level data from two independent samples is the Mann-Whitney U test.

In a Friedman test with 8 treatment levels and 5 blocks,df = ___.

Most "before and after" types of experiments should be analyzed using ___.

In a Friedman test with 6 treatment levels and 7 blocks,the df = ___.

Correlation coefficient cannot be used to analyze the association between two variables when only ordinal-level data are available.

In the Friedman test of c treatment levels,the degrees of freedom will be ___.

When using the Friedman test to test the following data to determine whether there is a significant difference between treatment levels,the ranks for block 1 are ___.

The null hypothesis for a one-sample runs test is ___.

The nonparametric counterpart of the t test to compare the means of two independent populations is the Mann-Whitney U test.

Which of the following is not an assumption of the Friedman test?

Which of the following tests should be used to compare the means of two populations if the samples are related?

Two stock analysts rank five investment portfolios for overall performance and risk. The Spearman rank correlation coefficient is ___.

In the Wilcoxon test of the differences between two populations,the value z statistic was calculated to be 1.80.If the level of significance is 0.05,which of the following decisions is appropriate?

A Kruskal-Wallis test is to be performed.There will be five categories,and alpha is chosen to be 0.01.The critical chi-square value is ___.

The appropriate test for comparing the means of two populations using ordinal-level data from two related samples is the Wilcoxon test and not Mann-Whitney U test.

Introduction to Statistics

Charts and Graphs

Descriptive Statistics

Probability

Discrete Distributions

Continuous Distributions

Sampling and Sampling Distributions

Statistical Inference: Estimation for Single Populations

Statistical Inference: Hypothesis Testing for Single Populations

Statistical Inferences About Two Populations

Analysis of Variance and Design of Experiments

Simple Regression Analysis and Correlation

Multiple Regression Analysis

Building Multiple Regression Models

Time-Series Forecasting and Index Numbers

Analysis of Categorical Data

Statistical Quality Control

Decision Analysis

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Exam 17: Nonparametric Statistics

The nonparametric alternative to analysis of variance for a randomized block design is the Friedman test.

The nonparametric counterpart of the t test to compare the means of two related samples is the ___.

The one-sample runs test is a nonparametric test for sequential independence.

The Wilcoxon test was used on 18 pairs of data.The total of the ranks (T)were computed to be 111 (for + ranks)and 60 (for - ranks).The z value for this test is ___.

Nonparametric statistics are sometimes called distribution-dependent statistics.

The appropriate test for comparing the means of two populations using ordinal-level data from two independent samples is the Mann-Whitney U test.

In a Friedman test with 8 treatment levels and 5 blocks,df = ___.

Most "before and after" types of experiments should be analyzed using ___.

In a Friedman test with 6 treatment levels and 7 blocks,the df = ___.

Correlation coefficient cannot be used to analyze the association between two variables when only ordinal-level data are available.

In the Friedman test of c treatment levels,the degrees of freedom will be ___.

When using the Friedman test to test the following data to determine whether there is a significant difference between treatment levels,the ranks for block 1 are ___.

The null hypothesis for a one-sample runs test is ___.

The nonparametric counterpart of the t test to compare the means of two independent populations is the Mann-Whitney U test.

Which of the following is not an assumption of the Friedman test?

Which of the following tests should be used to compare the means of two populations if the samples are related?

Two stock analysts rank five investment portfolios for overall performance and risk. The Spearman rank correlation coefficient is ___.

In the Wilcoxon test of the differences between two populations,the value z statistic was calculated to be 1.80.If the level of significance is 0.05,which of the following decisions is appropriate?

A Kruskal-Wallis test is to be performed.There will be five categories,and alpha is chosen to be 0.01.The critical chi-square value is ___.

The appropriate test for comparing the means of two populations using ordinal-level data from two related samples is the Wilcoxon test and not Mann-Whitney U test.

Introduction to Statistics

Charts and Graphs

Descriptive Statistics

Probability

Discrete Distributions

Continuous Distributions

Sampling and Sampling Distributions

Statistical Inference: Estimation for Single Populations

Statistical Inference: Hypothesis Testing for Single Populations

Statistical Inferences About Two Populations

Analysis of Variance and Design of Experiments

Simple Regression Analysis and Correlation

Multiple Regression Analysis

Building Multiple Regression Models

Time-Series Forecasting and Index Numbers

Analysis of Categorical Data

Statistical Quality Control

Decision Analysis

Filters