Question 1

In the Friedman test of c treatment levels, the degrees of freedom will be ___.

Accepted Answer

A) n - 1 
B) (r - 1)(c - 1) 
C) c - 1 
D) b - k - 1 
E) c + 1 
A) n - 1 
B) (r - 1)(c - 1) 
C) c - 1 
D) b - k - 1 
E) c + 1

Question 2

What is the Spearman rank correlation coefficient for the following set of data?

Accepted Answer

A) -10.2 
B) -2.35 
C) 0.65 
D) 0.50 
E) 0.05 
A) -10.2 
B) -2.35 
C) 0.65 
D) 0.50 
E) 0.05

Question 3

When using the Friedman test to test the following data to determine whether there is a significant difference between treatment levels with α = 0.05, the calculated value of chi-square is ___.

Accepted Answer

A) 4.51 
B) 5.27 
C) 2.83 
D) 3.48 
E) 1.48 
A) 4.51 
B) 5.27 
C) 2.83 
D) 3.48 
E) 1.48

Question 4

Personnel specialist Steve Jones is assessing a new supervisor's ability to follow company standards for evaluating employees.Steve has the new supervisor rate five hypothetical employees on a scale of one to ten.He is interested in how the new supervisor's ratings correlate with company norms for these benchmark cases.   The Spearman rank correlation coefficient is ___.

Accepted Answer

A) 0.80 
B) 0.85 
C) 0.90 
D) 0.25 
E) 1.00 
A) 0.80 
B) 0.85 
C) 0.90 
D) 0.25 
E) 1.00

Question 5

The nonparametric counterpart of the t test to compare the means of two independent populations is the ___.

Accepted Answer

A) chi-square goodness-of-fit test 
B) chi-square test of independence 
C) Mann-Whitney U test 
D) Wilcoxon test 
E) Friedman test 
A) chi-square goodness-of-fit test 
B) chi-square test of independence 
C) Mann-Whitney U test 
D) Wilcoxon test 
E) Friedman test

Question 6

An advantage of nonparametric statistics is that some nonparametric tests can be used to analyze situations in which data is available at only the nominal or the ordinal level.

Accepted Answer

A) True 
 B)False

Question 7

The nonparametric counterpart of the t test to compare the means of two independent populations is the Mann-Whitney U test.

Accepted Answer

A) True 
 B)False

Question 8

The Wilcoxon test was used on 18 pairs of data.The total of the ranks (T)were computed to be 111 (for + ranks)and 60 (for - ranks).The z value for this test is ___.

Accepted Answer

A) -1.11 
B) -0.05 
C) -0.07 
D) 0.033 
E) 2.22 
A) -1.11 
B) -0.05 
C) -0.07 
D) 0.033 
E) 2.22

Question 9

Nonparametric statistics are sometimes called distribution-dependent statistics.

Accepted Answer

A) True 
 B)False

Question 10

When using the Friedman test to test the following data to determine whether there is a significant difference between treatment levels with α = 0.05, the critical value of chi-square is ___.

Accepted Answer

A) 7.81 
B) 5.99 
C) 11.07 
D) 9.49 
E) 6.81 
A) 7.81 
B) 5.99 
C) 11.07 
D) 9.49 
E) 6.81

Question 11

Statistical techniques based on assumptions about the population from which the sample data are selected are called ___.

Accepted Answer

A) population statistics 
B) parametric statistics 
C) nonparametric statistics 
D) chi-square statistics 
E) correlation statistics 
A) population statistics 
B) parametric statistics 
C) nonparametric statistics 
D) chi-square statistics 
E) correlation statistics

Question 12

The null hypothesis in the Kruskal-Wallis test is ___.

Accepted Answer

A) all populations are identical 
B) all sample means are different 
C) x and y are not correlated 
D) the mean difference is zero 
E) all populations are not identical 
A) all populations are identical 
B) all sample means are different 
C) x and y are not correlated 
D) the mean difference is zero 
E) all populations are not identical

Question 13

When only ordinal-level data are available, Spearman's rank correlation rather than the Pearson product-moment correlation coefficient must be used to analyze the association between two variables.

Accepted Answer

A) True 
 B)False

Question 14

Most "before and after" types of experiments should be analyzed using ___.

Accepted Answer

A) chi-square goodness-of-fit test 
B) Kruskal-Wallis test 
C) Mann-Whitney U test 
D) Wilcoxon test 
E) Friedman test 
A) chi-square goodness-of-fit test 
B) Kruskal-Wallis test 
C) Mann-Whitney U test 
D) Wilcoxon test 
E) Friedman test

Question 15

Statistical techniques based on fewer assumptions about the population and the parameters are called ___.

Accepted Answer

A) population statistics 
B) parametric statistics 
C) nonparametric statistics 
D) chi-square statistics 
E) correlation statistics 
A) population statistics 
B) parametric statistics 
C) nonparametric statistics 
D) chi-square statistics 
E) correlation statistics

Question 16

What is the Spearman rank correlation coefficient for the following set of data?

Accepted Answer

A) -0.20 
B) 1.00 
C) 0.20 
D) 0.80 
E) -1.20 
A) -0.20 
B) 1.00 
C) 0.20 
D) 0.80 
E) -1.20

Question 17

The appropriate test for comparing the means of two populations using ordinal-level data from two independent samples is the Mann-Whitney U test.

Accepted Answer

A) True 
 B)False

Question 18

Four types of bicycle tires are ridden in six different cities to see if the tires lasted about the same number of miles.If there are differences, then that tire could promote its durability to potential customers.Using the data in the table below and an alpha of 0.05, what is the null hypothesis?

Accepted Answer

A) The durability of the tires between the cities is equal. 
B) The durability of the tires is dependent on the city and type of tire. 
C) The durability of the tires is dependent on the type of tire. 
D) The durability between the types of tire is equal. 
E) The durability of the tires is dependent on the city. 
A) The durability of the tires between the cities is equal. 
B) The durability of the tires is dependent on the city and type of tire. 
C) The durability of the tires is dependent on the type of tire. 
D) The durability between the types of tire is equal. 
E) The durability of the tires is dependent on the city.

Question 19

The appropriate test for comparing the means of two populations using ordinal-level data from two related samples is the Wilcoxon test and not Mann-Whitney U test.

Accepted Answer

A) True 
 B)False

Question 20

Correlation coefficients may be computed for parametric and nonparametric data.If the data are interval data, which of the following should be used?

Accepted Answer

A) Pearson correlation coefficient 
B) Spearman correlation coefficient 
C) Gaussian correlation coefficient 
D) De Moivre correlation coefficient 
E) Gossett correlation coefficient 
A) Pearson correlation coefficient 
B) Spearman correlation coefficient 
C) Gaussian correlation coefficient 
D) De Moivre correlation coefficient 
E) Gossett correlation coefficient

In the Friedman test of c treatment levels, the degrees of freedom will be ___.

What is the Spearman rank correlation coefficient for the following set of data?

When using the Friedman test to test the following data to determine whether there is a significant difference between treatment levels with α = 0.05, the calculated value of chi-square is ___.

The nonparametric counterpart of the t test to compare the means of two independent populations is the ___.

An advantage of nonparametric statistics is that some nonparametric tests can be used to analyze situations in which data is available at only the nominal or the ordinal level.

The nonparametric counterpart of the t test to compare the means of two independent populations is the Mann-Whitney U test.

The Wilcoxon test was used on 18 pairs of data.The total of the ranks (T)were computed to be 111 (for + ranks)and 60 (for - ranks).The z value for this test is ___.

Nonparametric statistics are sometimes called distribution-dependent statistics.

When using the Friedman test to test the following data to determine whether there is a significant difference between treatment levels with α = 0.05, the critical value of chi-square is ___.

Statistical techniques based on assumptions about the population from which the sample data are selected are called ___.

The null hypothesis in the Kruskal-Wallis test is ___.

When only ordinal-level data are available, Spearman's rank correlation rather than the Pearson product-moment correlation coefficient must be used to analyze the association between two variables.

Most "before and after" types of experiments should be analyzed using ___.

Statistical techniques based on fewer assumptions about the population and the parameters are called ___.

What is the Spearman rank correlation coefficient for the following set of data?

The appropriate test for comparing the means of two populations using ordinal-level data from two independent samples is the Mann-Whitney U test.

Four types of bicycle tires are ridden in six different cities to see if the tires lasted about the same number of miles.If there are differences, then that tire could promote its durability to potential customers.Using the data in the table below and an alpha of 0.05, what is the null hypothesis?

The appropriate test for comparing the means of two populations using ordinal-level data from two related samples is the Wilcoxon test and not Mann-Whitney U test.

Correlation coefficients may be computed for parametric and nonparametric data.If the data are interval data, which of the following should be used?

Introduction to Statistics

Charts and Graphs

Descriptive Statistics

Probability

Discrete Distributions

Continuous Distributions

Sampling and Sampling Distributions

Statistical Inference: Estimation for Single Populations

Statistical Inference: Hypothesis Testing for Single Populations

Statistical Inferences About Two Populations

Analysis of Variance and Design of Experiments

Simple Regression Analysis and Correlation

Multiple Regression Analysis

Building Multiple Regression Models

Time-Series Forecasting and Index Numbers

Analysis of Categorical Data

Statistical Quality Control

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Exam 17: Nonparametric Statistics

In the Friedman test of c treatment levels, the degrees of freedom will be ___.

What is the Spearman rank correlation coefficient for the following set of data?

When using the Friedman test to test the following data to determine whether there is a significant difference between treatment levels with α = 0.05, the calculated value of chi-square is ___.

The nonparametric counterpart of the t test to compare the means of two independent populations is the ___.

An advantage of nonparametric statistics is that some nonparametric tests can be used to analyze situations in which data is available at only the nominal or the ordinal level.

The nonparametric counterpart of the t test to compare the means of two independent populations is the Mann-Whitney U test.

The Wilcoxon test was used on 18 pairs of data.The total of the ranks (T)were computed to be 111 (for + ranks)and 60 (for - ranks).The z value for this test is ___.

Nonparametric statistics are sometimes called distribution-dependent statistics.

When using the Friedman test to test the following data to determine whether there is a significant difference between treatment levels with α = 0.05, the critical value of chi-square is ___.

Statistical techniques based on assumptions about the population from which the sample data are selected are called ___.

The null hypothesis in the Kruskal-Wallis test is ___.

When only ordinal-level data are available, Spearman's rank correlation rather than the Pearson product-moment correlation coefficient must be used to analyze the association between two variables.

Most "before and after" types of experiments should be analyzed using ___.

Statistical techniques based on fewer assumptions about the population and the parameters are called ___.

What is the Spearman rank correlation coefficient for the following set of data?

The appropriate test for comparing the means of two populations using ordinal-level data from two independent samples is the Mann-Whitney U test.

Four types of bicycle tires are ridden in six different cities to see if the tires lasted about the same number of miles.If there are differences, then that tire could promote its durability to potential customers.Using the data in the table below and an alpha of 0.05, what is the null hypothesis?

The appropriate test for comparing the means of two populations using ordinal-level data from two related samples is the Wilcoxon test and not Mann-Whitney U test.

Correlation coefficients may be computed for parametric and nonparametric data.If the data are interval data, which of the following should be used?

Introduction to Statistics

Charts and Graphs

Descriptive Statistics

Probability

Discrete Distributions

Continuous Distributions

Sampling and Sampling Distributions

Statistical Inference: Estimation for Single Populations

Statistical Inference: Hypothesis Testing for Single Populations

Statistical Inferences About Two Populations

Analysis of Variance and Design of Experiments

Simple Regression Analysis and Correlation

Multiple Regression Analysis

Building Multiple Regression Models

Time-Series Forecasting and Index Numbers

Analysis of Categorical Data

Statistical Quality Control

Decision Analysis

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