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
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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.
Publication type | Article |
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Publication Subtype | Journal Article |
Title | 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 |
Series title | Environmental Monitoring and Assessment |
DOI | 10.1023/A:1005798521296 |
Volume | 47 |
Issue | 3 |
Year Published | 1997 |
Language | English |
Publisher | Springer |
Contributing office(s) | National Wetlands Research Center, Wetland and Aquatic Research Center |
Description | 19 p. |
First page | 255 |
Last page | 273 |
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