Subgroups

Subgroups may be formed for a variety of purposes, including Taguchi analysis, dispersion analysis, or regression analysis using design replicates. Data arranged in subgroups of at least two may have a mean and variance calculated. Subgroups need not be all of the same size.

Learn more about the DOE tools for designed experiments in Six Sigma Demystified (2011, McGraw-Hill) by Paul Keller, in his online Intro. to DOE short course (only $99) or online Advanced Topics in DOE short course (only $139), or his online Black Belt certification training course ($875).