Question 1

The alternative hypothesis of the Kruskal-Wallis test is that ____________________ population locations differ.

Accepted Answer

The answer of The alternative hypothesis of the Kruskal-Wallis test...

Question 2

The Kruskal-Wallis test is always one tailed.The inequality sign in the alternative hypothesis is always ____________________.

Accepted Answer

The answer of The Kruskal-Wallis test is always one tailed.The...

Question 3

The alternative hypothesis of the Friedman test is that ____________________ population locations differ.

Accepted Answer

The answer of The alternative hypothesis of the Friedman test...

Question 4

In a Friedman test for comparing four populations,provided that there as eight blocks,the test statistic is calculated as F_r = 10.98.If the test is conducted at the 5% significance level,the conclusion and p-value will be: A)reject the null hypothesis,and 0.01 < p-value < 0.025. B)reject the null hypothesis,and p-value > 0.025. C)do not reject the null hypothesis,and 0.025 < p-value < 0.05. D)do not reject the null hypothesis,and p-value > 0.05.

Accepted Answer

Since the calculated test statistic (10.98) is greater than the critical value at the 5% significance level (7.81), we reject the null hypothesis. This means that there is a significant difference in at least one pair of populations. The p-value can be calculated using a chi-square distribution with (4-1) degrees of freedom and is approximately 0.011. Therefore, the correct answer is A as the p-value falls between 0.01 and 0.025.

Question 5

To apply the Friedman test to determine whether the locations of two or more populations are the same,the samples must be:
A)from a randomized block experiment.
B)from normal populations.
C)independent.
D)All of these choices are true.

Accepted Answer

The Friedman test requires samples from a randomized block experiment, where the same set of individuals or objects is subjected to multiple treatments or conditions. This ensures that the samples are dependent on each other, which is a requirement for the Friedman test. Normality and independence are not required for the Friedman test.

Question 6

If the rank sums for each sample are similar,the test statistic H for the Kruskal-Wallis test will be ____________________.As a result,you ____________________ (do/do not)reject H₀.

Accepted Answer

The answer of If the rank sums for each sample...

Question 7

The Friedman test is always:
A)one-tail with > in the alternative hypothesis.
B)one-tail with < in the alternative hypothesis.
C)two-tail
D)None of these choices.

Accepted Answer

The answer of The Friedman test is always:
A)one-tail with >...

Question 8

The data for analysis by a Kruskal-Wallis test are either ordinal or interval,but they do not have a(n)____________________ distribution.

Accepted Answer

The answer of The data for analysis by a Kruskal-Wallis...

Question 9

If the test statistic F_r for the Friedman test is ____________________,we do not reject H₀.

Accepted Answer

The answer of If the test statistic F_r for the...

Question 10

The nonparametric counterpart of the randomized block model of the analysis of variance is the:
A)Kruskal-Wallis test.
B)Friedman test.
C)Wilcoxon rank sum test.
D)Wilcoxon signed rank sum test.

Accepted Answer

The nonparametric counterpart of the randomized block model of the analysis of variance is the Friedman test. This test is used when there are repeated measures on the same subjects, and it ranks the data within each block (subject) rather than assuming a normal distribution like the parametric ANOVA. The other options (Kruskal-Wallis test, Wilcoxon rank sum test, and Wilcoxon signed rank sum test) are all nonparametric tests as well, but they are not appropriate for analyzing data in a randomized block design.

Question 11

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

Accepted Answer

The answer of A nonparametric method to compare two or...

Question 12

For sample sizes greater than or equal to 5,the test statistic H has an approximate ____________________ distribution.

Accepted Answer

The answer of For sample sizes greater than or equal...

Question 13

In a Friedman test for comparing three populations,provided that there are five blocks,the test statistic is calculated as F_r = 6.594.Then,the most accurate statement that can be made about the p-value is: A)p-value < 0.025 B).05 < p-value < .10 C).025 < p-value < .05 D)p-value > .10

Accepted Answer

Based on the given test statistic, the p-value falls between .025 and .05. Therefore, the most accurate statement is that the p-value is in the range 0.025 < p-value < 0.05, which corresponds to choice C.

Question 14

The Kruskal-Wallis test compares the locations of ____________________ populations.

Accepted Answer

The answer of The Kruskal-Wallis test compares the locations of...

Question 15

The data for analysis by a Friedman test are either ordinal or interval,but they do not have a(n)____________________ distribution.

Accepted Answer

The answer of The data for analysis by a Friedman...

Question 16

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

Accepted Answer

The answer of The Friedman test compares the locations of...

Question 17

When the Kruskal-Wallis test is used to test for a difference between two populations,it will produce the same outcome as the two-tail Wilcoxon ____________________ test.

Accepted Answer

The answer of When the Kruskal-Wallis test is used to...

Question 18

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

Accepted Answer

The answer of The Friedman test compares the locations of...

Question 19

In the case of comparing two population locations,the Kruskal-Wallis test can only determine whether a difference in locations exists.To determine which population has a higher location requires the use of the Wilcoxon ____________________ test.

Accepted Answer

The answer of In the case of comparing two population...

Question 20

The test statistic F_r for the Friedman test has what distribution? A)approximate normal distribution B)approximate chi-squared distribution C)F-distribution D)None of these choices.

Accepted Answer

The test statistic F_r for the Friedman test has an approximate chi-squared distribution with k-1 degrees of freedom, where k is the number of treatments being compared.

Quiz 19: Nonparametric Statistics

The alternative hypothesis of the Kruskal-Wallis test is that ____________________ population locations differ.

The Kruskal-Wallis test is always one tailed.The inequality sign in the alternative hypothesis is always ____________________.

The alternative hypothesis of the Friedman test is that ____________________ population locations differ.

In a Friedman test for comparing four populations,provided that there as eight blocks,the test statistic is calculated as F_r = 10.98.If the test is conducted at the 5% significance level,the conclusion and p-value will be:

To apply the Friedman test to determine whether the locations of two or more populations are the same,the samples must be:

If the rank sums for each sample are similar,the test statistic H for the Kruskal-Wallis test will be .As a result,you (do/do not)reject H₀.

The Friedman test is always:

The data for analysis by a Kruskal-Wallis test are either ordinal or interval,but they do not have a(n)____________________ distribution.

If the test statistic F_r for the Friedman test is ____________________,we do not reject H₀.

The nonparametric counterpart of the randomized block model of the analysis of variance is the:

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:

For sample sizes greater than or equal to 5,the test statistic H has an approximate ____________________ distribution.

In a Friedman test for comparing three populations,provided that there are five blocks,the test statistic is calculated as F_r = 6.594.Then,the most accurate statement that can be made about the p-value is:

The Kruskal-Wallis test compares the locations of ____________________ populations.

The data for analysis by a Friedman test are either ordinal or interval,but they do not have a(n)____________________ distribution.

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

When the Kruskal-Wallis test is used to test for a difference between two populations,it will produce the same outcome as the two-tail Wilcoxon ____________________ test.

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

In the case of comparing two population locations,the Kruskal-Wallis test can only determine whether a difference in locations exists.To determine which population has a higher location requires the use of the Wilcoxon ____________________ test.

The test statistic F_r for the Friedman test has what distribution?

Quiz 19: Nonparametric Statistics

The alternative hypothesis of the Kruskal-Wallis test is that ____________________ population locations differ.

The Kruskal-Wallis test is always one tailed.The inequality sign in the alternative hypothesis is always ____________________.

The alternative hypothesis of the Friedman test is that ____________________ population locations differ.

In a Friedman test for comparing four populations,provided that there as eight blocks,the test statistic is calculated as Fr = 10.98.If the test is conducted at the 5% significance level,the conclusion and p-value will be:

To apply the Friedman test to determine whether the locations of two or more populations are the same,the samples must be:

If the rank sums for each sample are similar,the test statistic H for the Kruskal-Wallis test will be ____________________.As a result,you ____________________ (do/do not)reject H0.

The Friedman test is always:

The data for analysis by a Kruskal-Wallis test are either ordinal or interval,but they do not have a(n)____________________ distribution.

If the test statistic Fr for the Friedman test is ____________________,we do not reject H0.

The nonparametric counterpart of the randomized block model of the analysis of variance is the:

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:

For sample sizes greater than or equal to 5,the test statistic H has an approximate ____________________ distribution.

In a Friedman test for comparing three populations,provided that there are five blocks,the test statistic is calculated as Fr = 6.594.Then,the most accurate statement that can be made about the p-value is:

The Kruskal-Wallis test compares the locations of ____________________ populations.

The data for analysis by a Friedman test are either ordinal or interval,but they do not have a(n)____________________ distribution.

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

When the Kruskal-Wallis test is used to test for a difference between two populations,it will produce the same outcome as the two-tail Wilcoxon ____________________ test.

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

In the case of comparing two population locations,the Kruskal-Wallis test can only determine whether a difference in locations exists.To determine which population has a higher location requires the use of the Wilcoxon ____________________ test.

The test statistic Fr for the Friedman test has what distribution?

In a Friedman test for comparing four populations,provided that there as eight blocks,the test statistic is calculated as F_r = 10.98.If the test is conducted at the 5% significance level,the conclusion and p-value will be:

If the rank sums for each sample are similar,the test statistic H for the Kruskal-Wallis test will be .As a result,you (do/do not)reject H₀.

If the test statistic F_r for the Friedman test is ____________________,we do not reject H₀.

In a Friedman test for comparing three populations,provided that there are five blocks,the test statistic is calculated as F_r = 6.594.Then,the most accurate statement that can be made about the p-value is:

The test statistic F_r for the Friedman test has what distribution?