This guide has been designed as a quick reference for the key elements of using and interpreting statistics in the DMAIC process. This Quick Reference – Basic Statistics – is one of the steps in analyzing the data you have gathered concerning the X’s, Critical X’s and Y’s for your process’s customers. Accurate data is the key to understanding the dynamics of the process. However, raw data tells you little – it must be analyzed correctly to yield decision making information. This is a 34 page reference guide including any applicable templates and data sets.