Likelihood Based Inference on the Box-Cox Family of Transformations:

SAS and Matlab Programs


Box and Cox (1964) proposed a parametric family of power transformations of the data to reduce problems with non-normality and heteroscedasticity. This paper presents programs in SAS and MATLAB to compute the MLE and to compute approximate confidence intervals for the Box-Cox transformation parameter.
Last modified: Wed Sep 1 16:10:52 HST 2004