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A SAS® code to correct for non-normality and non-constant variance in regression and anova models using the box-cox method of power transormation

Ziad A. Malaeb
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Abstract

A computer program written in SAS ® code for the Box–Cox family of power transformations is presented. The purpose of the program is to suggest a power transformation for the positive continuous response variables in only regression and ANOVA models. A brief overview of data transformation in regression and analysis of variance is given.An example using real data from the U.S. Environmental Protection Agency‘s Environmental Monitoring and Assessment Program/Estuaries (EMAP-E) illustrates the use of the program.

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Ziad A. Malaeb. 1997. A SAS® code to correct for non-normality and non-constant variance in regression and anova models using the box-cox method of power transormation. https://doi.org/10.1023/a%3A1005798521296

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