Question 1

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 is a non-parametric test that requires the samples to be from a randomized block experiment, where the same units or subjects are exposed to each treatment. This means that observations are paired, and the test assesses whether there is a significant difference between the treatments, based on the rank sums. Therefore, choices B and C are not necessarily true, as the test does not require normality or independence assumptions.

Question 2

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 3

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 4

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 5

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 6

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 7

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 8

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 9

The test statistic F_r for the Friedman test has an approximate ____________________ distribution.

Accepted Answer

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

Question 10

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 11

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 12

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

The p-value is between .025 and .05, which implies that the test is statistically significant at 95% confidence level, but not at 99% confidence level.

Question 13

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 for the Friedman test follows an approximate chi-squared distribution with df = k-1, where k is the number of treatments or groups being compared.

Question 14

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 15

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 16

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 17

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

Accepted Answer

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

Question 18

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 19

The Friedman test is always one tailed.The inequality sign in the alternative hypothesis is always ____________________.

Accepted Answer

The answer of The Friedman test is always one tailed.The...

Question 20

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

Accepted Answer

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

Quiz 19: Nonparametric Statistics

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

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

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

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

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

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

The Friedman test is always:

The test statistic F_r for the Friedman test has an approximate ____________________ distribution.

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.

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 test statistic F_r 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:

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

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

The Friedman 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.

Quiz 19: Nonparametric Statistics

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

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

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

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

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

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

The Friedman test is always:

The test statistic Fr for the Friedman test has an approximate ____________________ distribution.

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.

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 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 Fr = 10.98.If the test is conducted at the 5% significance level,the conclusion and p-value will be:

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

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

The Friedman 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.

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