Question 1

If a two-tailed Wilcoxon Matched-Pairs Signed Rank test is conducted for a sample of n = 8 and an alpha level equal to .05,the critical value is:

Accepted Answer

A) 4 
B) 1.96 
C) 30 
D) 2 
A) 4 
B) 1.96 
C) 30 
D) 2 A

Question 2

Which of the following tests would not be an example of nonparametric method?

Accepted Answer

A) Wilcoxon signed-rank test 
B) Mann-Whitney U-Test 
C) Kruskal-Wallis One-Way Analysis of Variance 
D) χ2 test 
A) Wilcoxon signed-rank test 
B) Mann-Whitney U-Test 
C) Kruskal-Wallis One-Way Analysis of Variance 
D) χ2 test D

Question 3

The Wilcoxon signed rank test is used to test hypotheses about the population median.

Accepted Answer

A) True 
 B)False  True

Question 4

When testing whether two paired populations have equal medians and the sample sizes are large,it is appropriate to convert the Wilcoxon Matched-Pairs Signed Rank test to a paired sample t-test.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following is not a step involved in the Wilcoxon signed rank test?

Accepted Answer

A) Find the deviations from the hypothesized median 
B) Rank the deviations 
C) Convert the deviations to absolute values 
D) Find the deviations from the sample median 
A) Find the deviations from the hypothesized median 
B) Rank the deviations 
C) Convert the deviations to absolute values 
D) Find the deviations from the sample median

Question 6

Under what circumstances should the standard normal distribution be used when employing the Mann-Whitney U test?

Accepted Answer

A) When the sample sizes are equal from the two populations 
B) When the sample sizes are greater than 20 
C) When the populations are normally distributed 
D) You would never use the standard normal distribution. 
A) When the sample sizes are equal from the two populations 
B) When the sample sizes are greater than 20 
C) When the populations are normally distributed 
D) You would never use the standard normal distribution.

Question 7

The Wilcoxon signed rank test is always a one-tail test with the rejection region in the upper tail.

Accepted Answer

A) True 
 B)False

Question 8

Under what conditions should a decision maker use a nonparametric statistical procedure?

Accepted Answer

Generally,nonparametric tests are used w

Question 9

Assume that a Kruskal-Wallis test is being conducted to determine whether or not the medians of three populations are equal.The sum of rankings and the sample size for each group are below.   What is the critical value for this test using a 0.10 level of significance?

Accepted Answer

A) 6.2514 
B) 5.9915 
C) 7.8147 
D) 4.6052 
A) 6.2514 
B) 5.9915 
C) 7.8147 
D) 4.6052

Question 10

The Kruskal-Wallis test is usually limited to comparing sample values from ________ or more populations.

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 5 
A) 2 
B) 3 
C) 4 
D) 5

Question 11

Recently,Major League Baseball officials stated that the median cost for a family of four to attend a baseball game including,parking,tickets,food,and drinks did not exceed $125.00.As long as the data are considered interval or ratio level,the t-test can be used to test MLB's claim.

Accepted Answer

A) True 
 B)False

Question 12

A marketing firm is interested to know whether the median age of college students is 21 years.A sample of 80 college students is taken.Thirty of the students were under 21,45 of the students were over 21,and 10 were 21 years old.The conclusion is that

Accepted Answer

A) the median age of college students is significantly different from 21. 
B) the median age of college students is not significantly different from 21. 
C) the median age of college students is significantly older than from 21. 
D) the median age of college students is significantly younger than from 21. 
A) the median age of college students is significantly different from 21. 
B) the median age of college students is not significantly different from 21. 
C) the median age of college students is significantly older than from 21. 
D) the median age of college students is significantly younger than from 21.

Question 13

If we wish to test whether two related populations have equal medians,an appropriate nonparametric test to use is:

Accepted Answer

A) the Mann-Whitney U test. 
B) the Kruskal-Wallis test. 
C) the Wilcoxon signed rank test. 
D) the Wilcoxon matched-pairs signed rank test. 
A) the Mann-Whitney U test. 
B) the Kruskal-Wallis test. 
C) the Wilcoxon signed rank test. 
D) the Wilcoxon matched-pairs signed rank test.

Question 14

The Mann-Whitney U test can be used to test whether two independent populations have the same median so long as the data are measured on at least an ordinal scale.

Accepted Answer

A) True 
 B)False

Question 15

Assume you are conducting a two-tailed Mann-Whitney U test for a small sample and have found that U1 = 58 and U2 = 86.What is the value of the test statistic?

Accepted Answer

A) 58 
B) 86 
C) 72 
D) 144 
A) 58 
B) 86 
C) 72 
D) 144

Question 16

In using the Kruskal-Wallis test the sample sizes for each population must be equal.

Accepted Answer

A) True 
 B)False

Question 17

The makers of furnace filters recently conducted a test to determine whether the median number of particulates that would pass through their four leading filters was the same.A random sample of 6 of each type of filter was used with the following data being recorded:
   If the Kruskal-Wallis test is used with an alpha = .01,the null hypothesis should be rejected and the managers should conclude that the four filters do not allow an equal median number of particulates.

Accepted Answer

A) True 
 B)False

Question 18

A large sample Mann-Whitney U test should be used when the sample sizes exceed 20.

Accepted Answer

A) True 
 B)False

Question 19

If a decision maker wishes to test to determine whether the medians are equal for two populations the Mann-Whitney U test is appropriate for either independent or dependent sampling situations.

Accepted Answer

A) True 
 B)False

Question 20

The Wilcoxon signed rank test should be used in place of the t-test whenever the sample size is less than 20.

Accepted Answer

A) True 
 B)False

If a two-tailed Wilcoxon Matched-Pairs Signed Rank test is conducted for a sample of n = 8 and an alpha level equal to .05,the critical value is:

Which of the following tests would not be an example of nonparametric method?

The Wilcoxon signed rank test is used to test hypotheses about the population median.

When testing whether two paired populations have equal medians and the sample sizes are large,it is appropriate to convert the Wilcoxon Matched-Pairs Signed Rank test to a paired sample t-test.

Which of the following is not a step involved in the Wilcoxon signed rank test?

Under what circumstances should the standard normal distribution be used when employing the Mann-Whitney U test?

The Wilcoxon signed rank test is always a one-tail test with the rejection region in the upper tail.

Under what conditions should a decision maker use a nonparametric statistical procedure?

Assume that a Kruskal-Wallis test is being conducted to determine whether or not the medians of three populations are equal.The sum of rankings and the sample size for each group are below. What is the critical value for this test using a 0.10 level of significance?

The Kruskal-Wallis test is usually limited to comparing sample values from ________ or more populations.

Recently,Major League Baseball officials stated that the median cost for a family of four to attend a baseball game including,parking,tickets,food,and drinks did not exceed $125.00.As long as the data are considered interval or ratio level,the t-test can be used to test MLB's claim.

A marketing firm is interested to know whether the median age of college students is 21 years.A sample of 80 college students is taken.Thirty of the students were under 21,45 of the students were over 21,and 10 were 21 years old.The conclusion is that

If we wish to test whether two related populations have equal medians,an appropriate nonparametric test to use is:

The Mann-Whitney U test can be used to test whether two independent populations have the same median so long as the data are measured on at least an ordinal scale.

Assume you are conducting a two-tailed Mann-Whitney U test for a small sample and have found that U₁ = 58 and U₂ = 86.What is the value of the test statistic?

In using the Kruskal-Wallis test the sample sizes for each population must be equal.

A large sample Mann-Whitney U test should be used when the sample sizes exceed 20.

If a decision maker wishes to test to determine whether the medians are equal for two populations the Mann-Whitney U test is appropriate for either independent or dependent sampling situations.

The Wilcoxon signed rank test should be used in place of the t-test whenever the sample size is less than 20.

The Where,Why,and How of Data Collection

Graphs,Charts and Tablesdescribing Your Data

Describing Data Using Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Introduction to Continuous Probability Distributions

Introduction to Sampling Distributions

Estimating Single Population Parameters

Introduction to Hypothesis Testing

Estimation and Hypothesis Testing for Two Population Parameters

Hypothesis Tests and Estimation for Population Variances

Analysis of Variance

Goodness-Of-Fit Tests and Contingency Analysis

Introduction to Linear Regression and Correlation Analysis

Multiple Regression Analysis and Model Building

Analyzing and Forecasting Time-Series Data

Introduction to Quality and Statistical Process Control

Filters

Exam 17: Introduction to Nonparametric Statistics

If a two-tailed Wilcoxon Matched-Pairs Signed Rank test is conducted for a sample of n = 8 and an alpha level equal to .05,the critical value is:

Which of the following tests would not be an example of nonparametric method?

The Wilcoxon signed rank test is used to test hypotheses about the population median.

When testing whether two paired populations have equal medians and the sample sizes are large,it is appropriate to convert the Wilcoxon Matched-Pairs Signed Rank test to a paired sample t-test.

Which of the following is not a step involved in the Wilcoxon signed rank test?

Under what circumstances should the standard normal distribution be used when employing the Mann-Whitney U test?

The Wilcoxon signed rank test is always a one-tail test with the rejection region in the upper tail.

Under what conditions should a decision maker use a nonparametric statistical procedure?

Assume that a Kruskal-Wallis test is being conducted to determine whether or not the medians of three populations are equal.The sum of rankings and the sample size for each group are below. What is the critical value for this test using a 0.10 level of significance?

The Kruskal-Wallis test is usually limited to comparing sample values from ________ or more populations.

Recently,Major League Baseball officials stated that the median cost for a family of four to attend a baseball game including,parking,tickets,food,and drinks did not exceed $125.00.As long as the data are considered interval or ratio level,the t-test can be used to test MLB's claim.

A marketing firm is interested to know whether the median age of college students is 21 years.A sample of 80 college students is taken.Thirty of the students were under 21,45 of the students were over 21,and 10 were 21 years old.The conclusion is that

If we wish to test whether two related populations have equal medians,an appropriate nonparametric test to use is:

The Mann-Whitney U test can be used to test whether two independent populations have the same median so long as the data are measured on at least an ordinal scale.

Assume you are conducting a two-tailed Mann-Whitney U test for a small sample and have found that U1 = 58 and U2 = 86.What is the value of the test statistic?

In using the Kruskal-Wallis test the sample sizes for each population must be equal.

A large sample Mann-Whitney U test should be used when the sample sizes exceed 20.

If a decision maker wishes to test to determine whether the medians are equal for two populations the Mann-Whitney U test is appropriate for either independent or dependent sampling situations.

The Wilcoxon signed rank test should be used in place of the t-test whenever the sample size is less than 20.

The Where,Why,and How of Data Collection

Graphs,Charts and Tablesdescribing Your Data

Describing Data Using Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Introduction to Continuous Probability Distributions

Introduction to Sampling Distributions

Estimating Single Population Parameters

Introduction to Hypothesis Testing

Estimation and Hypothesis Testing for Two Population Parameters

Hypothesis Tests and Estimation for Population Variances

Analysis of Variance

Goodness-Of-Fit Tests and Contingency Analysis

Introduction to Linear Regression and Correlation Analysis

Multiple Regression Analysis and Model Building

Analyzing and Forecasting Time-Series Data

Introduction to Quality and Statistical Process Control

Filters

Assume you are conducting a two-tailed Mann-Whitney U test for a small sample and have found that U₁ = 58 and U₂ = 86.What is the value of the test statistic?