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ERIC Number: EJ356313
Record Type: Journal
Publication Date: 1987
Pages: N/A
Abstractor: N/A
ISBN: N/A
ISSN: N/A
EISSN: N/A
Comparative Power of Student T Test and Mann-Whitney U Test for Unequal Sample Size and Variances.
Zimmerman, Donald W.
Journal of Experimental Education, v55 n3 p171-74 Spr 1987
A program obtained random samples from known populations, some of which violated the homogeneity assumption. Student t tests and Mann-Whitney U Tests were performed on the sample value. Where the t test led to incorrect decisions, the use of Mann-Whitney U test in its place led to poorer results. (JAZ)
Descriptors: Computer Software, Error of Measurement, Monte Carlo Methods, Nonparametric Statistics, Sample Size, Statistical Analysis, Statistical Distributions, Statistical Significance, Statistical Studies
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A