Question 1

The nonparametric alternative to the randomized block design is the ________________________ .

Accepted Answer

A) Kruskal-Wallis test 
B) Kendall's tau 
C) Wilcoxon Rank Sum test 
D) Friedman test 
E) Mann-Whitney test 
A) Kruskal-Wallis test 
B) Kendall's tau 
C) Wilcoxon Rank Sum test 
D) Friedman test 
E) Mann-Whitney test D

Question 2

Suppose that ten new smart phone models were evaluated by two consumer electronics magazines (Popular Electronics and Electronics Now) from 1 (best) to 10 (worst).To determine if there is difference in the rankings between the two magazines, the appropriate nonparametric method is ________________________ .

Accepted Answer

A) Wilcoxon Rank-Sum 
B) Wilcoxon Signed-Rank 
C) Spearman's rho 
D) Kruskal Wallis 
E) Kendall's tau 
A) Wilcoxon Rank-Sum 
B) Wilcoxon Signed-Rank 
C) Spearman's rho 
D) Kruskal Wallis 
E) Kendall's tau B

Question 3

Suppose that 6 federal government economists and 7 university economists were asked to grade the effectiveness of an economic stimulus bill in terms of its ability to increase jobs over the next two years.What nonparametric method is appropriate for testing if the two groups differ in terms of their opinion?

Accepted Answer

A) Wilcoxon Rank-Sum 
B) Wilcoxon Signed-Rank 
C) Spearman's rho 
D) Kruskal Wallis 
E) Kendall's tau 
A) Wilcoxon Rank-Sum 
B) Wilcoxon Signed-Rank 
C) Spearman's rho 
D) Kruskal Wallis 
E) Kendall's tau A

Question 4

A management professor divided her class of 10 executives into two equal sized groups and used a different approach to teach about various leadership styles (case study and online interactive).To compare the effectiveness of the two approaches, the appropriate nonparametric procedure is the ________________________ .

Accepted Answer

A) Kruskal-Wallis test 
B) Kendall's tau 
C) Wilcoxon signed-rank test 
D) Wilcoxon rank sum test 
E) Friedman test 
A) Kruskal-Wallis test 
B) Kendall's tau 
C) Wilcoxon signed-rank test 
D) Wilcoxon rank sum test 
E) Friedman test

Question 5

Ratings were collected for four brands of ice cream, each tested by a different group of consumers.Ice cream was rated on the level of creaminess on a scale of 1 to 8 (1 = very creamy to 8 = not creamy).This data will be used to determine whether there differences in perceived creaminess among the four brands.What would be the critical value for the Kruskal-Wallis test at α = 0.10.

Accepted Answer

A) 14.51 
B) 22.10 
C) 6.251 
D) 5.999 
E) None of the above. 
A) 14.51 
B) 22.10 
C) 6.251 
D) 5.999 
E) None of the above.

Question 6

Suppose that ten new smart phone models were evaluated by two consumer electronics magazines from 1 (best) to 10 (worst).Spearman's rho was calculated to be
-)45.We can say that there is ________________________ .

Accepted Answer

A) a high level of agreement between the two magazine rankings 
B) strong and positive association between the two magazine rankings 
C) an outlier in the data that affects the results 
D) a moderate level of disagreement between the two magazine rankings 
E) a rank of number 1 for the same smart phone in both magazines 
A) a high level of agreement between the two magazine rankings 
B) strong and positive association between the two magazine rankings 
C) an outlier in the data that affects the results 
D) a moderate level of disagreement between the two magazine rankings 
E) a rank of number 1 for the same smart phone in both magazines

Question 7

Eight hybrid cars are used to determine if there is a difference in gas mileage (MPG) with and without a particular additive.Using the appropriate nonparametric method, the value of the calculated test statistic for the data shown below is ________________________ .

Accepted Answer

A) 4 
B) 5 
C) 8 
D) 30 
E) 35 
A) 4 
B) 5 
C) 8 
D) 30 
E) 35

Question 8

Consumer ratings for three popular brands of yogurt are shown in the table to the right.Using the Kruskal-Wallis test to compare ratings among brands, the calculated value for the test statistic is ________________________ .

Accepted Answer

A) 8.345 
B) 12.315 
C) 4.995 
D) 2.635 
E) None of the above. 
A) 8.345 
B) 12.315 
C) 4.995 
D) 2.635 
E) None of the above.

Question 9

Suppose that 6 federal government economists and 7 university economists were asked to grade the effectiveness of an economic stimulus bill in terms of its ability to increase jobs over the next two years.The grades are shown in the table to the right.Using the appropriate nonparametric method, the calculated value of the test statistic is ________________________ .

Accepted Answer

A) T1 = 62.5 
B) T1 = 30 
C) T1 = 54 
D) T1 = 28.5 
E) None of the above. 
A) T1 = 62.5 
B) T1 = 30 
C) T1 = 54 
D) T1 = 28.5 
E) None of the above.

Question 10

Four brands of ice cream was each tested by a different group of consumers and rated on the level of creaminess on a scale of 1 to 8 (1 = very creamy to 8 = not creamy).This data will be used to determine whether there differences in perceived creaminess among the four brands.Using the Kruskal-Wallis test, the value of H is

Accepted Answer

A) 14.51 
B) 22.10 
C) 6.351 
D) 5.999 
E) None of the above. 
A) 14.51 
B) 22.10 
C) 6.351 
D) 5.999 
E) None of the above.

Question 11

The best tasting ice creams are generally high in fat content, which gives them a creamy texture.Four brands of ice cream (two national and two local) were tested by consumers who rated how "creamy" they tasted on a 5-point Likert type scale (1 = not creamy to 5 = very creamy).Each brand was rated by a different group of consumers.The appropriate nonparametric method to use for these data is the ________________________ .

Accepted Answer

A) Kruskal-Wallis test 
B) Kendall's tau 
C) Wilcoxon signed-rank test 
D) Wilcoxon rank sum test 
E) Spearman's rho 
A) Kruskal-Wallis test 
B) Kendall's tau 
C) Wilcoxon signed-rank test 
D) Wilcoxon rank sum test 
E) Spearman's rho

Question 12

Which of the following statements is false regarding nonparametric methods?

Accepted Answer

A) Nonparametric methods are appropriate when we want to treat the data as ordinal. 
B) Compared to the correlation coefficient r, Kendall's tau is less affected by outliers in the data. 
C) The Wilcoxon rank sum test is the nonparametric alternative to the paired t-test. 
D) Spearman's rho is always between -1 and 1. 
E) The Friedman test is appropriate for a randomized block design. 
A) Nonparametric methods are appropriate when we want to treat the data as ordinal. 
B) Compared to the correlation coefficient r, Kendall's tau is less affected by outliers in the data. 
C) The Wilcoxon rank sum test is the nonparametric alternative to the paired t-test. 
D) Spearman's rho is always between -1 and 1. 
E) The Friedman test is appropriate for a randomized block design.

Question 13

Eight hybrid cars are used to determine if there is a difference in gas mileage (MPG) with and without an additive claimed to increase the fuel efficiency.The appropriate nonparametric method to use for these data is the ________________________ .

Accepted Answer

A) Kruskal-Wallis test 
B) Kendall's tau 
C) Wilcoxon signed-rank test 
D) Wilcoxon rank sum test 
E) Spearman's rho 
A) Kruskal-Wallis test 
B) Kendall's tau 
C) Wilcoxon signed-rank test 
D) Wilcoxon rank sum test 
E) Spearman's rho

The nonparametric alternative to the randomized block design is the ________________________ .

Suppose that ten new smart phone models were evaluated by two consumer electronics magazines from 1 (best) to 10 (worst).Spearman's rho was calculated to be -)45.We can say that there is ________________________ .

Eight hybrid cars are used to determine if there is a difference in gas mileage (MPG) with and without a particular additive.Using the appropriate nonparametric method, the value of the calculated test statistic for the data shown below is ________________________ .

Consumer ratings for three popular brands of yogurt are shown in the table to the right.Using the Kruskal-Wallis test to compare ratings among brands, the calculated value for the test statistic is ________________________ .

Which of the following statements is false regarding nonparametric methods?

Eight hybrid cars are used to determine if there is a difference in gas mileage (MPG) with and without an additive claimed to increase the fuel efficiency.The appropriate nonparametric method to use for these data is the ________________________ .

Data and Decisions

Visualizing and Describing Categorical Data

Describing, Displaying, and Visualizing Quantitative Data

Correlation and Linear Regression

Randomness and Probability

Random Variables and Probability Models

The Normal and Other Continuous Distributions

Data Sources: Observational Studies and Surveys

Data Sources: Experiments

Sampling Distributions and Confidence Intervals for Proportio

Confidence Intervals for Means

Testing Hypotheses

More About Tests and Intervals

Comparing Two Means

Inference for Counts: Chi-Square Tests

Inference for Regression

Understanding Residuals

Multiple Regression

Building Multiple Regression Models

Time Series Analysis

Introduction to Data Mining

Quality Control

Decision Making and Risk

Analysis of Experiments and Observational Studies

Statistics and Data Analysis

Filters

Exam 23: Nonparametric Methods

The nonparametric alternative to the randomized block design is the ________________________ .

Suppose that ten new smart phone models were evaluated by two consumer electronics magazines from 1 (best) to 10 (worst).Spearman's rho was calculated to be -)45.We can say that there is ________________________ .

Eight hybrid cars are used to determine if there is a difference in gas mileage (MPG) with and without a particular additive.Using the appropriate nonparametric method, the value of the calculated test statistic for the data shown below is ________________________ .

Consumer ratings for three popular brands of yogurt are shown in the table to the right.Using the Kruskal-Wallis test to compare ratings among brands, the calculated value for the test statistic is ________________________ .

Which of the following statements is false regarding nonparametric methods?

Eight hybrid cars are used to determine if there is a difference in gas mileage (MPG) with and without an additive claimed to increase the fuel efficiency.The appropriate nonparametric method to use for these data is the ________________________ .

Data and Decisions

Visualizing and Describing Categorical Data

Describing, Displaying, and Visualizing Quantitative Data

Correlation and Linear Regression

Randomness and Probability

Random Variables and Probability Models

The Normal and Other Continuous Distributions

Data Sources: Observational Studies and Surveys

Data Sources: Experiments

Sampling Distributions and Confidence Intervals for Proportio

Confidence Intervals for Means

Testing Hypotheses

More About Tests and Intervals

Comparing Two Means

Inference for Counts: Chi-Square Tests

Inference for Regression

Understanding Residuals

Multiple Regression

Building Multiple Regression Models

Time Series Analysis

Introduction to Data Mining

Quality Control

Decision Making and Risk

Analysis of Experiments and Observational Studies

Statistics and Data Analysis

Filters