Question 1

The sign test statistic has a(n)____________________ distribution.

Accepted Answer

The answer of The sign test statistic has a(n)____________________ distribution....

Question 2

Song Ratings
A music critic wanted to determine whether or not music listeners of different age groups evaluate a song differently.With this objective,he commissioned a survey that asked people their ratings of the most popular songs.The rating categories were: 1 = terrible,2 = fair,3 = good,and 4 = excellent.Each respondent was also asked to categorize his or her age as either: 1 = teenager,2 = young adult (20-34),3 = middle age (35-50),and 4 = over 50.
The results are shown below.
 $$\begin{array}{l}
\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\text { Song Ratings }\
\begin{array} { | c | c | c | c | } 
\hline \text { Teenager } & \text { Young Adult } & \text { Middle Age } & \text { Senior } \
\hline 3 & 2 & 3 & 3 \
4 & 3 & 2 & 4 \
3 & 3 & 1 & 4 \
3 & 2 & 2 & 3 \
3 & 2 & 2 & 3 \
4 & 1 & 3 & 4 \
2 & 3 & 1 & 4 \
4 & 2 & 4 & 3 \
\hline
\end{array}
\end{array}$$
-{Song Ratings Narrative} What statement can be made about the p-value for this test?

Accepted Answer

The answer of Song Ratings
A music critic wanted to determine...

Question 3

The Friedman test compares the locations of ____________________ populations where the data are generated from a randomized block experiment.

Accepted Answer

two or mor

Question 4

Advertisement
In a Kruskal-Wallis test to determine whether differences exist among three different advertisements,the following statistics were obtained: TS1U1B11S1U1B0 = 884,nS1U1B11S1U1B0 = 20,TS1U1B12S1U1B0 = 756,nS1U1B12S1U1B0 = 28,TS1U1B13S1U1B0 = 1061,nS1U1B13S1U1B0 = 25.
-{Advertisement Narrative} Explain how to use the p-value for testing the hypotheses.

Accepted Answer

Since p-va

Question 5

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

Accepted Answer

A) True 
 B)False

Question 6

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.
 $$\begin{array}{l}
\text { Customers' Agas }\
\begin{array} { | c c c | } 
\hline \text { Hot Dogs } & \text { Hamburger } & \text { Chicken } \
\hline 23 & 26 & 25 \
19 & 20 & 28 \
25 & 18 & 36 \
17 & 35 & 23 \
36 & 33 & 39 \
25 & 25 & 27 \
28 & 19 & 38 \
31 & 17 & 31 \
\hline
\end{array}
\end{array}$$
-{Customers' Ages Narrative} Explain how to use the p-value for testing the hypotheses?

Accepted Answer

Since p-value > @#LAT-DLM&,don

Question 7

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.
 $$\begin{array}{l}
\text { Tasts Ratings }\
\begin{array} { | c | c c c c | } 
\hline \text { Respondent } & \text { Dinner 1 } & \text { Dinner 2 } & \text { Dinner 3 } & \text { Dinner 4 } \
\hline 1 & 6 & 6 & 4 & 5 \
2 & 5 & 5 & 2 & 4 \
3 & 7 & 7 & 3 & 4 \
4 & 6 & 6 & 5 & 4 \
5 & 7 & 6 & 4 & 3 \
6 & 7 & 5 & 3 & 5 \
7 & 6 & 4 & 3 & 4 \
8 & 5 & 6 & 4 & 6 \
9 & 4 & 4 & 3 & 5 \
10 & 7 & 5 & 6 & 4 \
\hline
\end{array}
\end{array}$$
-{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 a...

Question 8

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.
 $$\begin{array}{l}
\text { Customers' Agas }\
\begin{array} { | c c c | } 
\hline \text { Hot Dogs } & \text { Hamburger } & \text { Chicken } \
\hline 23 & 26 & 25 \
19 & 20 & 28 \
25 & 18 & 36 \
17 & 35 & 23 \
36 & 33 & 39 \
25 & 25 & 27 \
28 & 19 & 38 \
31 & 17 & 31 \
\hline
\end{array}
\end{array}$$
-{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 9

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:
 $$\begin{array}{l}
\text { Airline }\
\begin{array} { | c | c c c c | } 
\hline \text { Person } & \text { A } & \text { B } & \text { C } & \text { D } \
\hline 1 & 1 & 3 & 5 & 2 \
2 & 5 & 4 & 2 & 1 \
3 & 2 & 5 & 3 & 2 \
4 & 4 & 2 & 4 & 1 \
5 & 3 & 3 & 1 & 5 \
6 & 4 & 4 & 5 & 3 \
7 & 3 & 4 & 1 & 4 \
8 & 2 & 5 & 2 & 1 \
9 & 5 & 3 & 4 & 2 \
10 & 5 & 5 & 4 & 3 \
\hline
\end{array}
\end{array}$$
-{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 fly frequently...

Question 10

The Kruskal-Wallis test can be used to determine whether a difference exists between two populations.However,to determine whether one population location is larger than another,we must apply the Wilcoxon rank sum test.

Accepted Answer

A) True 
 B)False

Question 11

H0 in the Wilcoxon rank sum test is that the two population ____________________ are the same.

Accepted Answer

Question 12

The alternative hypothesis for the Friedman test is that all the population locations differ.

Accepted Answer

A) True 
 B)False

Question 13

The Friedman test applies to which situation?

Accepted Answer

A)  When the problem objective is to compare two or more populations. 
B)  The data are either ordinal or interval but not nominal. 
C)  The data are generated from a randomized block experiment. 
D)  All of these choices are true. 
A)  When the problem objective is to compare two or more populations. 
B)  The data are either ordinal or interval but not nominal. 
C)  The data are generated from a randomized block experiment. 
D)  All of these choices are true.

Question 14

Nonparametric methods are designed to test ordinal data.

Accepted Answer

A) True 
 B)False

Question 15

The Kruskal-Wallis test statistic can be approximated by a chi-squared distribution with k- 1 degrees of freedom (where k is the number of populations)whenever the sample sizes are all greater than or equal to:

Accepted Answer

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

Question 16

Song Ratings
A music critic wanted to determine whether or not music listeners of different age groups evaluate a song differently.With this objective,he commissioned a survey that asked people their ratings of the most popular songs.The rating categories were: 1 = terrible,2 = fair,3 = good,and 4 = excellent.Each respondent was also asked to categorize his or her age as either: 1 = teenager,2 = young adult (20-34),3 = middle age (35-50),and 4 = over 50.
The results are shown below.
 $$\begin{array}{l}
\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\text { Song Ratings }\
\begin{array} { | c | c | c | c | } 
\hline \text { Teenager } & \text { Young Adult } & \text { Middle Age } & \text { Senior } \
\hline 3 & 2 & 3 & 3 \
4 & 3 & 2 & 4 \
3 & 3 & 1 & 4 \
3 & 2 & 2 & 3 \
3 & 2 & 2 & 3 \
4 & 1 & 3 & 4 \
2 & 3 & 1 & 4 \
4 & 2 & 4 & 3 \
\hline
\end{array}
\end{array}$$
-{Song Ratings Narrative} Explain how to use the p-value for testing the hypotheses.

Accepted Answer

Since p-va

Question 17

In a Kruskal-Wallis test,there are four samples and the value of the test statistic is calculated as H = 8.79.The most accurate statement that can be made about the p-value is that:

Accepted Answer

A)  it is greater than 0.10. 
B)  it is greater than 0.05 but smaller than 0.10. 
C)  it is greater than 0.05. 
D)  it is greater than 0.025 but smaller than 0.05. 
A)  it is greater than 0.10. 
B)  it is greater than 0.05 but smaller than 0.10. 
C)  it is greater than 0.05. 
D)  it is greater than 0.025 but smaller than 0.05.

Question 18

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 19

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 20

Which of the following shows the calculation of the sample Spearman rank coefficient?

Accepted Answer

A)  sab -sasb 
B)  sab / sasb 
C)  sasb / sab 
D)  None of these choices. 
A)  sab -sasb 
B)  sab / sasb 
C)  sasb / sab 
D)  None of these choices.

The sign test statistic has a(n)____________________ distribution.

The Friedman test compares the locations of ____________________ populations where the data are generated from a randomized block experiment.

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

The Kruskal-Wallis test can be used to determine whether a difference exists between two populations.However,to determine whether one population location is larger than another,we must apply the Wilcoxon rank sum test.

H₀ in the Wilcoxon rank sum test is that the two population ____________________ are the same.

The alternative hypothesis for the Friedman test is that all the population locations differ.

The Friedman test applies to which situation?

Nonparametric methods are designed to test ordinal data.

The Kruskal-Wallis test statistic can be approximated by a chi-squared distribution with k- 1 degrees of freedom (where k is the number of populations)whenever the sample sizes are all greater than or equal to:

In a Kruskal-Wallis test,there are four samples and the value of the test statistic is calculated as H = 8.79.The most accurate statement that can be made about the p-value is that:

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

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:

Which of the following shows the calculation of the sample Spearman rank coefficient?

What Is Statistics

Graphical Descriptive Techniques I

Graphical Descriptive Techniques II

A: Numerical Descriptive Techniques

B: Numerical Descriptive Techniques

C: Numerical Descriptive Techniques

Data Collection and Sampling

Probability

A: Random Variables and Discrete Probability Distributions

B: 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

A: Simple Linear Regression and Correlation

B: Simple Linear Regression and Correlation

Multiple Regression

Model Building

Time-Series Analysis and Forecasting

Statistical Process Control

Decision Analysis

Conclusion

Filters

Exam 19: Nonparametric Statistics

The sign test statistic has a(n)____________________ distribution.

The Friedman test compares the locations of ____________________ populations where the data are generated from a randomized block experiment.

Advertisement In a Kruskal-Wallis test to determine whether differences exist among three different advertisements,the following statistics were obtained: T1 = 884,n1 = 20,T2 = 756,n2 = 28,T3 = 1061,n3 = 25. -{Advertisement Narrative} Explain how to use the p-value for testing the hypotheses.

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

The Kruskal-Wallis test can be used to determine whether a difference exists between two populations.However,to determine whether one population location is larger than another,we must apply the Wilcoxon rank sum test.

H0 in the Wilcoxon rank sum test is that the two population ____________________ are the same.

The alternative hypothesis for the Friedman test is that all the population locations differ.

The Friedman test applies to which situation?

Nonparametric methods are designed to test ordinal data.

The Kruskal-Wallis test statistic can be approximated by a chi-squared distribution with k- 1 degrees of freedom (where k is the number of populations)whenever the sample sizes are all greater than or equal to:

In a Kruskal-Wallis test,there are four samples and the value of the test statistic is calculated as H = 8.79.The most accurate statement that can be made about the p-value is that:

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

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:

Which of the following shows the calculation of the sample Spearman rank coefficient?

What Is Statistics

Graphical Descriptive Techniques I

Graphical Descriptive Techniques II

A: Numerical Descriptive Techniques

B: Numerical Descriptive Techniques

C: Numerical Descriptive Techniques

Data Collection and Sampling

Probability

A: Random Variables and Discrete Probability Distributions

B: 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

A: Simple Linear Regression and Correlation

B: Simple Linear Regression and Correlation

Multiple Regression

Model Building

Time-Series Analysis and Forecasting

Statistical Process Control

Decision Analysis

Conclusion

Filters

H₀ in the Wilcoxon rank sum test is that the two population ____________________ are the same.

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