This document discusses Six Sigma methods and formulas for quality management. It begins by introducing Six Sigma and defining key terms like defects per million opportunities and standard deviation. It then presents the Six Sigma implementation process (DMAIC), outlining the Define, Measure, Analyze, Improve, and Control phases. In the Define phase, projects are chartered and teams assembled. The Measure phase involves collecting data and doing capability analyses. The Analyze phase uses statistical tests like t-tests and ANOVA to find sources of variation. Formulas for measures of central tendency, dispersion, hypothesis testing, and process capability are also provided.