JMASM20: Exact Permutation Critical Values For The Kruskal-Wallis One-Way ANOVA

An Algorithm And Code For Computing Exact Critical Values For The Kruskal-Wallis Nonparametric One-Way ANOVA

Running head: A COMPARISON OF THE EXACT KRUSKAL-WALLIS A comparison of the Exact Kruskal-Wallis Distribution to Asymptotic Approximations for All Sample Sizes

We generated exact probability distributions for sample sizes up to 35 in each of three groups ( 105 N  ) and up to 10 in each of four groups ( 40 N  ). We provided a portion of these exact probability tables and compared the exact distributions to the chi-square, gamma, and beta approximations. The beta approximation was best in terms of the root mean squared error. At specific significance ...

Power study of anova versus Kruskal-Wallis test

This paper describes the comparison of the anova and the KruskalWallis test by means of the power when violating the assumption about normally distributed populations. The permutation method is used as a simulation method to determine the power of the test. It appears that in the case of asymmetric populations the non-parametric Kruskal-Wallis test performs better than the parametric equivalent...

A S A S R Macro for the Multivariate Extension of the Kruskal - Wallis Test Including Multiple Comparisons : Randomization and Z 2 Criteria 1 Warren

In a multi-group experimental design where interest is in a univariate response, the nonparametric Kruskal-Wallis test [Kniskal and Wallis (1952)] provides a potentially more powerful alternative to the parametric one-way analysis of variance when the assumptions of normality are in question. For multivariate response, Puri and Sen (1966) proposed a generalization of the KmskalWallis test that ...

Comparison of Three Instructional Methods for Drug Calculation Skill in Nursing Critical Care Courses: Lecturing, Problem Solving, and Computer-Assisted Self-Learning

Introduction: Due to development of educational systems and importance of education in the nursing profession, the necessity of using appropriate instructional methods for new theoretical and practical skills in students is clear. The purpose of this study is comparing the effects of three methods lecture, problem solving, and computer-assisted self learning on the drug calculation skill on thi...