Use Box-Cox Transformation For Calculating Process Capability with Non-Normal Data Calculating the process capability using non-normal data can give inaccurate results.

Data transformation, and particularly the Box-Cox power transformation, is one of these remedial actions that may help to make data normal. By understanding both the concept of transformation and ...

Stuart R. Lipsitz, Joseph Ibrahim, Geert Molenberghs, Using a Box-Cox Transformation in the Analysis of Longitudinal Data with Incomplete Responses, Journal of the Royal Statistical Society.