Dealing with Nonnormal Data: Parametric Analysis of Transformed Data vs Nonparametric Analysis.

Rasmussen, Jeffrey Lee; Dunlap, William P.

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ERIC Number: EJ440442

Record Type: Journal

Publication Date: 1991

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ISSN: ISSN-0013-1644

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Dealing with Nonnormal Data: Parametric Analysis of Transformed Data vs Nonparametric Analysis.

Rasmussen, Jeffrey Lee; Dunlap, William P.

Educational and Psychological Measurement, v51 n4 p809-20 Win 1991

Results of a Monte Carlo study with 4 populations (3,072 conditions) indicate that when distributions depart markedly from normality, nonparametric analysis and parametric analysis of transformed data show superior power to parametric analysis of raw data. Under conditions studied, parametric analysis of transformed data is more powerful than nonparametric analysis. (SLD)

Descriptors: Comparative Analysis, Computer Simulation, Monte Carlo Methods, Power (Statistics), Statistical Distributions, Statistical Significance

Publication Type: Journal Articles; Reports - Evaluative

Education Level: N/A

Audience: N/A

Language: English

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