Question 1

The test statistic Fr for the Friedman test has an approximate ____________________ distribution.

Accepted Answer

chi-square

Question 2

The Friedman test is always:

Accepted Answer

A) one-tail with > in the alternative hypothesis. B) one-tail with < in the alternative hypothesis. C) two-tail D) None of these choices. A) one-tail with > in the alternative hypothesis. B) one-tail with < in the alternative hypothesis. C) two-tail D) None of these choices.

Question 3

A nonparametric method to compare two populations,when the samples are matched pairs and the data are interval,and where the normality requirement necessary to perform the parametric test is unsatisfied,is the:

Accepted Answer

A) Wilcoxon rank sum test. 
B) sign test. 
C) matched pairs t-test. 
D) Wilcoxon signed rank sum test. 
A) Wilcoxon rank sum test. 
B) sign test. 
C) matched pairs t-test. 
D) Wilcoxon signed rank sum test.

Question 4

Customers' Ages
 The marketing manager of a Hot Dog Stand chain is in the process of examining some of the demographic characteristics of her customers.In particular,she would like to investigate the belief that the ages of the customers of hot dogs,fast-food hamburger,and fast-food chicken restaurants are different.To test this belief,the ages of eight randomly selected customers from each restaurant type were recorded and listed below.From previous analysis we know that the ages are not normally distributed.   ​ ​
-{Customers' Ages Narrative} Does this data provide enough evidence at the 10% significance level to infer that there are differences in ages among the customers of the three restaurant types?

Accepted Answer

H₀: The locations of all three population

Question 5

The procedure for the Wilcoxon rank sum test requires that we rank each group separately rather than together.

Accepted Answer

A) True 
 B)False

Question 6

The Wilcoxon signed rank sum test for matched pairs is the nonparametric counterpart of the paired two-sample t-test of μD.

Accepted Answer

A) True 
 B)False

Question 7

Comparing the output of strawberries grown on plots using fertilizer A with that grown on otherwise identical plots using fertilizer B,in order to make a general assessment of relative fertilizer effectiveness,may well call for a:

Accepted Answer

A) Friedman test. 
B) Kruskal-Wallis test. 
C) Wilcoxon rank-sum test. 
D) Spearman rank correlation test. 
A) Friedman test. 
B) Kruskal-Wallis test. 
C) Wilcoxon rank-sum test. 
D) Spearman rank correlation test.

Question 8

The nonparametric counterpart of the parametric t-test of μD for matched pairs is the:

Accepted Answer

A) Friedman test. 
B) Kruskal-Wallis test. 
C) Wilcoxon signed rank sum test. 
D) Wilcoxon rank sum test. 
A) Friedman test. 
B) Kruskal-Wallis test. 
C) Wilcoxon signed rank sum test. 
D) Wilcoxon rank sum test.

Question 9

In testing the hypotheses
H0: The two population locations are the same.
H1: The location of population A is to the left of the location of population b.The statistics nA = 6,TA = 32,nB = 8,and TB = 58 are calculated with data drawn from two independent samples:
a.Which test is used for testing the hypotheses above?
b.What is the p-value of this test?

Accepted Answer

a. The Wil

Question 10

The data for analysis by a Kruskal-Wallis test are either ordinal or interval,but they do not have a(n)____________________ distribution.

Accepted Answer

The answer of The data for analysis by a Kruskal-Wallis...

Question 11

Movie Scripts
 ​ In general,before a producer agrees to make a movie,each script is thoroughly reviewed by movie editors.Suppose that the Big-Screen Film Company has recently received two scripts for new movies.To help them decide which one to produce,both are sent to 30 editors who rate the scripts to judge which one is better.Suppose that 10 editors rate script 1 better and 20 rate script 2 better. ​ ​
-{Movie Scripts Narrative} What is the p-value of this test?

Accepted Answer

The answer of  Movie Scripts
 ​ In general,before a...

Question 12

In a normal approximation to the Wilcoxon rank sum test,the standardized test statistic is calculated as z = 1.96.For a two-tail test,the p-value of the test is 0.025.

Accepted Answer

A) True 
 B)False

Question 13

Airlines Ranking 
Ten business people who fly frequently from Las Vegas to Miami were asked to rank four airlines in terms of the quality of service.The people assigned scores using a 5-point Likert scale where: 1 = bad,2 = poor,3 = average,4 = good,and 5 = excellent.The results are shown below:   ​ ​
-{Airlines Ranking Narrative} Using the appropriate statistical table,what statement can be made about the p-value for the test in the previous question? Explain how to use the p-value for testing the hypotheses.

Accepted Answer

p-value > 0.10 Since

Question 14

Airlines Ranking 
Ten business people who fly frequently from Las Vegas to Miami were asked to rank four airlines in terms of the quality of service.The people assigned scores using a 5-point Likert scale where: 1 = bad,2 = poor,3 = average,4 = good,and 5 = excellent.The results are shown below:   ​ ​
-{Airlines Ranking Narrative} Which test is appropriate if you want to compare the quality of service of the four airlines?

Accepted Answer

The answer of  Airlines Ranking 
Ten business people who...

Question 15

A parametric test is a hypothesis test that depends on certain specific assumptions about the probability distribution of population values or the sizes of population parameters.

Accepted Answer

A) True 
 B)False

Question 16

The critical value is taken from the F-distribution whenever the test is a Kruskal-Wallis test.

Accepted Answer

A) True 
 B)False

Question 17

A nonparametric method to compare two or more populations,when the samples are matched pairs and the data are either ordinal or interval but not normal,is the:

Accepted Answer

A) Wilcoxon signed rank sum test. 
B) sign test. 
C) Friedman test. 
D) Kruskal-Wallis test. 
A) Wilcoxon signed rank sum test. 
B) sign test. 
C) Friedman test. 
D) Kruskal-Wallis test.

Question 18

Use the Wilcoxon rank sum test on the data below to determine at the 5% significance level whether the location of population A is to the left of the location of population B.

Accepted Answer

H₀: The two population locations are the

Question 19

If the rank sums for each sample are similar,the test statistic H for the Kruskal-Wallis test will be ____________________.As a result,you ____________________ (do/do not)reject H0.

Accepted Answer

Question 20

An ardent fan of television game shows has observed that,in general,the more educated the contestant,the less money he or she wins.To test her belief she gathers data about the last eight winners of her favorite game show.She records their winnings in dollars and the number of years of education.The results are as follows.   Can she conclude at the 5% significance level that the more educated the contestant,the less the money he or she wins in TV game shows? (The condition of normality is not met by these variables.)

Accepted Answer

H₀: ρ_s = 0 vs.H₁: ρ_s≠ 0 Rejection region: |

The test statistic F_r for the Friedman test has an approximate ____________________ distribution.

The Friedman test is always:

A nonparametric method to compare two populations,when the samples are matched pairs and the data are interval,and where the normality requirement necessary to perform the parametric test is unsatisfied,is the:

The procedure for the Wilcoxon rank sum test requires that we rank each group separately rather than together.

The Wilcoxon signed rank sum test for matched pairs is the nonparametric counterpart of the paired two-sample t-test of μ_D.

Comparing the output of strawberries grown on plots using fertilizer A with that grown on otherwise identical plots using fertilizer B,in order to make a general assessment of relative fertilizer effectiveness,may well call for a:

The nonparametric counterpart of the parametric t-test of μ_D for matched pairs is the:

The data for analysis by a Kruskal-Wallis test are either ordinal or interval,but they do not have a(n)____________________ distribution.

In a normal approximation to the Wilcoxon rank sum test,the standardized test statistic is calculated as z = 1.96.For a two-tail test,the p-value of the test is 0.025.

A parametric test is a hypothesis test that depends on certain specific assumptions about the probability distribution of population values or the sizes of population parameters.

The critical value is taken from the F-distribution whenever the test is a Kruskal-Wallis test.

A nonparametric method to compare two or more populations,when the samples are matched pairs and the data are either ordinal or interval but not normal,is the:

Use the Wilcoxon rank sum test on the data below to determine at the 5% significance level whether the location of population A is to the left of the location of population B.

If the rank sums for each sample are similar,the test statistic H for the Kruskal-Wallis test will be .As a result,you (do/do not)reject H₀.

What Is Statistics

Graphical Descriptive Techniques 1

Graphical Descriptive Techniques 2

Numerical Descriptive Techniques

Data Collection and Sampling

Probability

Random Variables and Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Introduction to Estimation

Introduction to Hypothesis Testing

Inference About a Population

Inference About Comparing Two Populations

Analysis of Variance

Chi-Squared Tests

Simple Linear Regression and Correlation

Multiple Regression

Model Building

Time-Series Analytics and Forecasting

Statistical Process Control

Decision Analysis

Conclusion

Filters

Exam 19: Nonparametric Statistics

The test statistic Fr for the Friedman test has an approximate ____________________ distribution.

The Friedman test is always:

A nonparametric method to compare two populations,when the samples are matched pairs and the data are interval,and where the normality requirement necessary to perform the parametric test is unsatisfied,is the:

The procedure for the Wilcoxon rank sum test requires that we rank each group separately rather than together.

The Wilcoxon signed rank sum test for matched pairs is the nonparametric counterpart of the paired two-sample t-test of μD.

Comparing the output of strawberries grown on plots using fertilizer A with that grown on otherwise identical plots using fertilizer B,in order to make a general assessment of relative fertilizer effectiveness,may well call for a:

The nonparametric counterpart of the parametric t-test of μD for matched pairs is the:

The data for analysis by a Kruskal-Wallis test are either ordinal or interval,but they do not have a(n)____________________ distribution.

In a normal approximation to the Wilcoxon rank sum test,the standardized test statistic is calculated as z = 1.96.For a two-tail test,the p-value of the test is 0.025.

A parametric test is a hypothesis test that depends on certain specific assumptions about the probability distribution of population values or the sizes of population parameters.

The critical value is taken from the F-distribution whenever the test is a Kruskal-Wallis test.

A nonparametric method to compare two or more populations,when the samples are matched pairs and the data are either ordinal or interval but not normal,is the:

Use the Wilcoxon rank sum test on the data below to determine at the 5% significance level whether the location of population A is to the left of the location of population B.

If the rank sums for each sample are similar,the test statistic H for the Kruskal-Wallis test will be ____________________.As a result,you ____________________ (do/do not)reject H0.

What Is Statistics

Graphical Descriptive Techniques 1

Graphical Descriptive Techniques 2

Numerical Descriptive Techniques

Data Collection and Sampling

Probability

Random Variables and Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Introduction to Estimation

Introduction to Hypothesis Testing

Inference About a Population

Inference About Comparing Two Populations

Analysis of Variance

Chi-Squared Tests

Simple Linear Regression and Correlation

Multiple Regression

Model Building

Time-Series Analytics and Forecasting

Statistical Process Control

Decision Analysis

Conclusion

Filters

The test statistic F_r for the Friedman test has an approximate ____________________ distribution.

The Wilcoxon signed rank sum test for matched pairs is the nonparametric counterpart of the paired two-sample t-test of μ_D.

The nonparametric counterpart of the parametric t-test of μ_D for matched pairs is the:

If the rank sums for each sample are similar,the test statistic H for the Kruskal-Wallis test will be .As a result,you (do/do not)reject H₀.