Question 1

The test statistic for the null hypothesis that the correlation among the ranks is equal to zero is a chi-square statistic.

Accepted Answer

A) True 
 B)False

Question 2

Twenty-five college seniors were given two brands of organic hamburgers to sample: Burger A and BurgerB. A statistician wants to determine if one of the burgers is preferred over the other.
The null hypothesis for this scenario is:B. Four students preferred Burger A and 21 preferred Burger

Accepted Answer

A)  H0: μ = 5.0 
B)  H0: μ = 5.0. 
C)  H0: μ = 0.5. 
A)  H0: μ = 5.0 
B)  H0: μ = 5.0. 
C)  H0: μ = 0.5.

Question 3

A soap manufacturer is experimenting with several formulas of soap powder. Three of the formulas were selected for further testing by a panel of homemakers. The ratings for the three formulas are as follows:   What is the sum of the ranks for Formula C?

Accepted Answer

77
Explanation: As o

Question 4

The Spearman coefficient of rank correlation computes the correlations for ____________ scaled data.

Accepted Answer

The answer of The Spearman coefficient of rank correlation computes...

Question 5

Fifty-five voters from a sample of 80 indicated that they favored casino gambling in their city. The city council is interested in finding out whether or not there is a significant difference between the proportions of those favoring and not favoring casino gambling in their community. The decision regarding the null hypothesis is ______________.

Accepted Answer

A)  do not reject H0 
B)  to accept both the null and alternative hypotheses 
C)  reject H0 
D)  that there is insufficient information to determine which hypothesis to reject 
A)  do not reject H0 
B)  to accept both the null and alternative hypotheses 
C)  reject H0 
D)  that there is insufficient information to determine which hypothesis to reject

Question 6

Twenty economists were sampled and asked to predict if the national economy would improve during the next 12 months. Eleven of the economists predicted an increase, two economists predicted no change, and seven economists predicted a decrease in the economy. Conduct a hypothesis test at the 0.10 significance level to determine if the majority of economists predict an increase. Based on the analysis, we would conclude that:

Accepted Answer

A)  the economists favor an increase in the economy. 
B)  the economists favor a decrease in the economy. 
C)  the economists favor no change in the economy. 
D)  No conclusion can be reacheD. 
A)  the economists favor an increase in the economy. 
B)  the economists favor a decrease in the economy. 
C)  the economists favor no change in the economy. 
D)  No conclusion can be reacheD.

Question 7

In the Kruskal-Wallis test for the following data, what are the degrees of freedom?

Accepted Answer

A)  8 
B)  2 
C)  6 
D)  3 
A)  8 
B)  2 
C)  6 
D)  3

Question 8

The Wilcoxon signed-rank test requires the populations to be _____________.

Accepted Answer

The answer of The Wilcoxon signed-rank test requires the populations...

Question 9

Two movie reviewers gave their ratings (0 to 4 stars) to ten movies released this past month as follows:   The rank order correlation is to be used.
What is the computed value of t?

Accepted Answer

2.844
Explanation: First use f

Question 10

The Spearman coefficient of rank correlation method ____________ the observations in each sample.

Accepted Answer

The answer of The Spearman coefficient of rank correlation method...

Question 11

A _________ sign test should be applied, if H0: π ≤ 0.50, H1: π > 0.50 and the level of significance is 0.05.

Accepted Answer

Question 12

When are nonparametric methods best applied?

Accepted Answer

When we cannot make

Question 13

Two movie reviewers gave their ratings (0 to 4 stars) to seven movies released this past month as follows:   The Wilcoxon signed-rank test of difference is to be used.
What is your decision at the 5% level of significance?

Accepted Answer

Do not reject H₀. Explanation: As shown i

Question 14

The distribution of the sample statistic (H) for the Kruskal-Wallis test is approximately equal to the:

Accepted Answer

A)  F distribution. 
B)  t distribution. 
C)  chi-square distribution. 
D)  standard normal distribution. 
A)  F distribution. 
B)  t distribution. 
C)  chi-square distribution. 
D)  standard normal distribution.

Question 15

Nonparametric tests require data that can be __________.

Accepted Answer

The answer of Nonparametric tests require data that can be...

Question 16

To determine whether four population means are equal, a sample from each population was selected at random. Using the Kruskal-Wallis test, H was computed to be 2.09. What is our decision at the 0.05 level of risk?

Accepted Answer

A)  Fail to reject the null hypothesis because 0.05  2.09. 
D)  Reject the null hypothesis because 2.09 > critical value of 1.96. 
A)  Fail to reject the null hypothesis because 0.05  2.09. 
D)  Reject the null hypothesis because 2.09 > critical value of 1.96.

Question 17

What is the first step in applying the sign test?

Accepted Answer

A)  Rank the paired data from high to low or vice versa. 
B)  Apply a correction factor to each observation. 
C)  Determine the sign of difference between each observed pair of data. 
D)  Determine the number of degrees of freedom. 
A)  Rank the paired data from high to low or vice versa. 
B)  Apply a correction factor to each observation. 
C)  Determine the sign of difference between each observed pair of data. 
D)  Determine the number of degrees of freedom.

Question 18

A hypothesis test that rho is zero is conducted at the 5% level of significance. If Spearman's (rho) is 0.86 for a sample of 15 observations, what is the computed value of the t statistic?

Accepted Answer

A)  0.456 
B)  6.08 
C)  0.425 
D)  2.16 
A)  0.456 
B)  6.08 
C)  0.425 
D)  2.16

Question 19

If a sign test is applied, what is the null hypothesis for a two-tailed test?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 20

In testing the significance of Spearman's rank-order coefficient, the null hypothesis is _______________.

Accepted Answer

H0 (the ra

The test statistic for the null hypothesis that the correlation among the ranks is equal to zero is a chi-square statistic.

Twenty-five college seniors were given two brands of organic hamburgers to sample: Burger A and BurgerB. A statistician wants to determine if one of the burgers is preferred over the other. The null hypothesis for this scenario is:B. Four students preferred Burger A and 21 preferred Burger

A soap manufacturer is experimenting with several formulas of soap powder. Three of the formulas were selected for further testing by a panel of homemakers. The ratings for the three formulas are as follows: What is the sum of the ranks for Formula C?

The Spearman coefficient of rank correlation computes the correlations for ____________ scaled data.

In the Kruskal-Wallis test for the following data, what are the degrees of freedom?

The Wilcoxon signed-rank test requires the populations to be _____________.

Two movie reviewers gave their ratings (0 to 4 stars) to ten movies released this past month as follows: The rank order correlation is to be used. What is the computed value of t?

The Spearman coefficient of rank correlation method ____________ the observations in each sample.

A _________ sign test should be applied, if H₀: π ≤ 0.50, H₁: π > 0.50 and the level of significance is 0.05.

When are nonparametric methods best applied?

Two movie reviewers gave their ratings (0 to 4 stars) to seven movies released this past month as follows: The Wilcoxon signed-rank test of difference is to be used. What is your decision at the 5% level of significance?

The distribution of the sample statistic (H) for the Kruskal-Wallis test is approximately equal to the:

Nonparametric tests require data that can be __________.

To determine whether four population means are equal, a sample from each population was selected at random. Using the Kruskal-Wallis test, H was computed to be 2.09. What is our decision at the 0.05 level of risk?

What is the first step in applying the sign test?

A hypothesis test that rho is zero is conducted at the 5% level of significance. If Spearman's (rho) is 0.86 for a sample of 15 observations, what is the computed value of the t statistic?

If a sign test is applied, what is the null hypothesis for a two-tailed test?

In testing the significance of Spearman's rank-order coefficient, the null hypothesis is _______________.

What Is Statistics

Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

Describing Data: Numerical Measures

Describing Data: Displaying and Exploring Data

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Analysis of Variance

Correlation and Linear Regression

Multiple Regression Analysis

Nonparametric Methods: Nominal Level Hypothesis Tests

Index Numbers

Time Series and Forecasting

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters

Exam 16: Nonparametric Methods: Analysis of Ordinal Data

The test statistic for the null hypothesis that the correlation among the ranks is equal to zero is a chi-square statistic.

Twenty-five college seniors were given two brands of organic hamburgers to sample: Burger A and BurgerB. A statistician wants to determine if one of the burgers is preferred over the other. The null hypothesis for this scenario is:B. Four students preferred Burger A and 21 preferred Burger

A soap manufacturer is experimenting with several formulas of soap powder. Three of the formulas were selected for further testing by a panel of homemakers. The ratings for the three formulas are as follows: What is the sum of the ranks for Formula C?

The Spearman coefficient of rank correlation computes the correlations for ____________ scaled data.

In the Kruskal-Wallis test for the following data, what are the degrees of freedom?

The Wilcoxon signed-rank test requires the populations to be _____________.

Two movie reviewers gave their ratings (0 to 4 stars) to ten movies released this past month as follows: The rank order correlation is to be used. What is the computed value of t?

The Spearman coefficient of rank correlation method ____________ the observations in each sample.

A _________ sign test should be applied, if H0: π ≤ 0.50, H1: π > 0.50 and the level of significance is 0.05.

When are nonparametric methods best applied?

Two movie reviewers gave their ratings (0 to 4 stars) to seven movies released this past month as follows: The Wilcoxon signed-rank test of difference is to be used. What is your decision at the 5% level of significance?

The distribution of the sample statistic (H) for the Kruskal-Wallis test is approximately equal to the:

Nonparametric tests require data that can be __________.

To determine whether four population means are equal, a sample from each population was selected at random. Using the Kruskal-Wallis test, H was computed to be 2.09. What is our decision at the 0.05 level of risk?

What is the first step in applying the sign test?

A hypothesis test that rho is zero is conducted at the 5% level of significance. If Spearman's (rho) is 0.86 for a sample of 15 observations, what is the computed value of the t statistic?

If a sign test is applied, what is the null hypothesis for a two-tailed test?

In testing the significance of Spearman's rank-order coefficient, the null hypothesis is _______________.

What Is Statistics

Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

Describing Data: Numerical Measures

Describing Data: Displaying and Exploring Data

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Analysis of Variance

Correlation and Linear Regression

Multiple Regression Analysis

Nonparametric Methods: Nominal Level Hypothesis Tests

Index Numbers

Time Series and Forecasting

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters

A _________ sign test should be applied, if H₀: π ≤ 0.50, H₁: π > 0.50 and the level of significance is 0.05.