Purchase Solution

Use of Kruskal-Wallace and ANOVA

Not what you're looking for?

Ask Custom Question

I would like a comparison of ANOVA tests and Kruskal-Wallace testing. When is it best to use each one? I would also like a basic description of each.

Purchase this Solution
Solution Summary

This posting details when is it best use Anova tests and Kruskal-Wallace testing.

Solution Preview

ANOVA requires the assumption that the population being compared are all normally distributed with equal variance. When we have reason to believe that the population under study are not normally distributed we cannot use ANOVA.
In such situation we use kruskal Walis test.This test is a non parametric test that was designed to detect the differences among the population which requires no assumptions about the shape of the population distribution

KRUSKAL WALLACE
The Kruskal-Wallis test is a nonparametric method of testing the hypothesis that several populations have the same continuous distribution versus the alternative that measurements tend to be higher in one or ...

Purchase this Solution
Free BrainMass Quizzes
Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

View More Free Quizzes
Related BrainMass Solutions

  • Statistics - Use of Kruskal-Wallace

    85173 Statistics - Use of Kruskal-Wallace I need some examples of how I would use ANOVA testing and Kruskal-Wallace testing in a small computer business.

  • Kruskal-Wallace procedure in SAS

    15587 Compare the effectiveness of three types of pain relievers using the Kruskal-Wallace procedure. The tool for the analysis was SAS using the NPAR1WAY procedure.

  • Wilcoxon Signed-Rank Test and Kruskal-Wallis Test

    an equal interval scale 4) that the k samples are independently and randomly drawn from the source population(s) Now, if the conditions can't be met, we are unable to perform an ANOVA, and therefore need to use a Kruskal-Wallis test to examine

  • Conditions of Kruskal-Wallis and ANOVA

    82754 ANALYSIS of VARIANCE Under what conditions should the Kruskal-Wallis be used instead of analysis of variance? ANOVA requires the assumption that the population being compared are all normally distributed with equal variance.

  • Stats: Non parametric test / Anova

    Kruskal-Wallis The Kruskal-Wallis test is a nonparametric test used to compare three or more groups of sample data. The expert examines non parametric tests for ANOVA.

  • Hypothesis Testing: ANOVA and Kruskal Wallis Test

    Use alpha = 5% Answer is in attached file. Answers questions on hypothesis testing using ANOVA and Kruskal Wallis test

  • Multiple Choice Questions in Business Statistics

    a. 5 b. 6 c. 7 d. 12 Answer: b. 6 degrees of freedom = (rows-1) x (columns-1) = 2 x 3 =6 Answers to 5 Multiple choice questions on one-way ANOVA , two-way ANOVA, Kruskal-Wallis Rank Test for Differences, contingency table.

  • Kruskal-Wallis

    Here Kruskal-Wallis non parametric ANOVA is the best statistical tool to analysis the relationship between the variables differences in life satisfaction and highest level of education.

  • Analyze the data with the parametric one-way ANOVA,

    We use Kruskal-Wallis test and get the test statistic as follows.

View More Related Solutions