Question 1

The nonparametric counterpart of the parametric one-way analysis of variance F-test is the:

Accepted Answer

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

Question 2

When the relationship between two variables is very strong and decreasing in a linear way,the Spearman rank-correlation coefficient will be close to:

Accepted Answer

A) 0 
B) −1 
C) ρ 
D) ∞ 
A) 0 
B) −1 
C) ρ 
D) ∞

Question 3

Coffee
 ​ A supermarket chain has its own house brand of coffee.The general manager claims that their coffee is better than the coffee sold by a well-known Coffee Shop chain.To test the claim 40 individuals are randomly selected to participate in the following experiment.Each respondent is given the two brands of coffee to taste (without any identification)and asked to judge which one is better.Suppose that 25 people judge the Coffee Shop chain brand better,four say that the brands taste the same,and the rest claim that the supermarket brand is better. ​ ​
-{Coffee Narrative} Which test is appropriate for this situation?

Accepted Answer

The answer of Coffee
 ​ A supermarket chain has its...

Question 4

Frozen TV Dinner 
The general manager of a frozen TV dinner maker must decide which one of four new dinners to introduce to the market.He decides to perform an experiment to help make a decision.Each dinner is sampled by ten people who then rate the product on a 7-point scale,where 1 = poor,and 7 = excellent.The results are shown below.   ​ ​
-{Frozen TV Dinner Narrative} Which statistical technique can the general manager use to help him make a decision?

Accepted Answer

The answer of Frozen TV Dinner 
The general manager of...

Question 5

When n is greater than or equal to 10,the sign test statistic has an approximate ____________________ distribution.

Accepted Answer

The answer of When n is greater than or equal...

Question 6

To apply the Wilcoxon rank sum test to determine whether the location of population 1 is different from the location of population 2,the samples must be independent.

Accepted Answer

A) True 
 B)False

Question 7

When n > 30,rs has an approximate normal distribution with mean ____________________.

Accepted Answer

Question 8

The Spearman rank correlation coefficient is equal to Pearson's correlation coefficient based on the ____________________ of the data.

Accepted Answer

The answer of The Spearman rank correlation coefficient is equal...

Question 9

When data are interval,but not normal,and you want to analyze matched pairs differences,use the ____________________ test.

Accepted Answer

Wilcoxon s

Question 10

When the sample size n is greater than 30,the Spearman rank correlation coefficient rs is approximately normally distributed with:

Accepted Answer

A) mean 0 and standard deviation 1. 
B) mean 1 and standard deviation   . 
C) mean 0 and standard deviation   . 
D) mean 1 and standard deviation
 
) 
A) mean 0 and standard deviation 1. 
B) mean 1 and standard deviation   . 
C) mean 0 and standard deviation   . 
D) mean 1 and standard deviation
 
)

Question 11

The Wilcoxon signed rank sum test incorporates not only the sign of each difference,but the ____________________ of the difference as well.

Accepted Answer

The answer of The Wilcoxon signed rank sum test incorporates...

Question 12

When the Friedman test is used to test for a difference between two populations,it will produce the same outcome as the ____________________ test.

Accepted Answer

The answer of When the Friedman test is used to...

Question 13

The Kruskal-Wallis test is always:

Accepted Answer

A) one-tail. 
B) two-tail. 
C) used with one sample. 
D) used when the populations are normally distributed. 
A) one-tail. 
B) two-tail. 
C) used with one sample. 
D) used when the populations are normally distributed.

Question 14

The general manager of a chain of Pet stores believes that experience is the most important factor in determining the level of success of a salesperson.To examine this belief she records last month's sales (in $1,000s)and the years of experience of 10 randomly selected salespeople.These data are listed below.   Can we conclude at the 5% significance level that experience of the salesperson and sales are linearly related? (Note we cannot assume either variable has a normal distribution.)
​
​

Accepted Answer

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

Question 15

Nonparametric tests are methods of inference that make no assumptions whatsoever about the nature of underlying population distributions or their parameters.

Accepted Answer

A) True 
 B)False

Question 16

Statistical methods that require,among other assumptions,that the populations be normally distributed are known as:

Accepted Answer

A) distribution-free techniques. 
B) nonparametric techniques. 
C) parametric techniques. 
D) both a and b are correct. 
A) distribution-free techniques. 
B) nonparametric techniques. 
C) parametric techniques. 
D) both a and b are correct.

Question 17

The sign test statistic is approximately normally distributed whenever the sample sizes are larger than:

Accepted Answer

A) 30 
B) 10 
C) 5 
D) None of these choices. 
A) 30 
B) 10 
C) 5 
D) None of these choices.

Question 18

Frozen TV Dinner 
The general manager of a frozen TV dinner maker must decide which one of four new dinners to introduce to the market.He decides to perform an experiment to help make a decision.Each dinner is sampled by ten people who then rate the product on a 7-point scale,where 1 = poor,and 7 = excellent.The results are shown below.   ​ ​
-{Frozen TV Dinner Narrative} Can the general manager infer at the 5% significance level that there are differences in the taste ratings of the four dinners?

Accepted Answer

H₀: The locations of all four populations

Question 19

The Spearman rank correlation coefficient is calculated by first ranking the data values,and then calculating the Pearson correlation coefficient of the ranks.

Accepted Answer

A) True 
 B)False

Question 20

The nonparametric tests discussed in your book (Wilcoxon rank sum test,sign test,Wilcoxon signed rank sum test,Kruskal-Wallis test,and Friedman test)all require that the probability distributions be:

Accepted Answer

A) identical except with respect to shape (distribution). 
B) identical except with respect to spread (variance). 
C) identical except with respect to location. 
D) different with respect to location,spread,and shape. 
A) identical except with respect to shape (distribution). 
B) identical except with respect to spread (variance). 
C) identical except with respect to location. 
D) different with respect to location,spread,and shape.

The nonparametric counterpart of the parametric one-way analysis of variance F-test is the:

When the relationship between two variables is very strong and decreasing in a linear way,the Spearman rank-correlation coefficient will be close to:

When n is greater than or equal to 10,the sign test statistic has an approximate ____________________ distribution.

To apply the Wilcoxon rank sum test to determine whether the location of population 1 is different from the location of population 2,the samples must be independent.

When n > 30,r_s has an approximate normal distribution with mean ____________________.

The Spearman rank correlation coefficient is equal to Pearson's correlation coefficient based on the ____________________ of the data.

When data are interval,but not normal,and you want to analyze matched pairs differences,use the ____________________ test.

When the sample size n is greater than 30,the Spearman rank correlation coefficient r_s is approximately normally distributed with:

The Wilcoxon signed rank sum test incorporates not only the sign of each difference,but the ____________________ of the difference as well.

When the Friedman test is used to test for a difference between two populations,it will produce the same outcome as the ____________________ test.

The Kruskal-Wallis test is always:

Nonparametric tests are methods of inference that make no assumptions whatsoever about the nature of underlying population distributions or their parameters.

Statistical methods that require,among other assumptions,that the populations be normally distributed are known as:

The sign test statistic is approximately normally distributed whenever the sample sizes are larger than:

The Spearman rank correlation coefficient is calculated by first ranking the data values,and then calculating the Pearson correlation coefficient of the ranks.

The nonparametric tests discussed in your book (Wilcoxon rank sum test,sign test,Wilcoxon signed rank sum test,Kruskal-Wallis test,and Friedman test)all require that the probability distributions be:

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 nonparametric counterpart of the parametric one-way analysis of variance F-test is the:

When the relationship between two variables is very strong and decreasing in a linear way,the Spearman rank-correlation coefficient will be close to:

When n is greater than or equal to 10,the sign test statistic has an approximate ____________________ distribution.

To apply the Wilcoxon rank sum test to determine whether the location of population 1 is different from the location of population 2,the samples must be independent.

When n > 30,rs has an approximate normal distribution with mean ____________________.

The Spearman rank correlation coefficient is equal to Pearson's correlation coefficient based on the ____________________ of the data.

When data are interval,but not normal,and you want to analyze matched pairs differences,use the ____________________ test.

When the sample size n is greater than 30,the Spearman rank correlation coefficient rs is approximately normally distributed with:

The Wilcoxon signed rank sum test incorporates not only the sign of each difference,but the ____________________ of the difference as well.

When the Friedman test is used to test for a difference between two populations,it will produce the same outcome as the ____________________ test.

The Kruskal-Wallis test is always:

Nonparametric tests are methods of inference that make no assumptions whatsoever about the nature of underlying population distributions or their parameters.

Statistical methods that require,among other assumptions,that the populations be normally distributed are known as:

The sign test statistic is approximately normally distributed whenever the sample sizes are larger than:

The Spearman rank correlation coefficient is calculated by first ranking the data values,and then calculating the Pearson correlation coefficient of the ranks.

The nonparametric tests discussed in your book (Wilcoxon rank sum test,sign test,Wilcoxon signed rank sum test,Kruskal-Wallis test,and Friedman test)all require that the probability distributions be:

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

When n > 30,r_s has an approximate normal distribution with mean ____________________.

When the sample size n is greater than 30,the Spearman rank correlation coefficient r_s is approximately normally distributed with: