Rational sub grouping is the process of organizing the data into groups which were produced basically under the same conditions
The Sum of Squares technique calculates a measure of the variation in an experiment. Used in Designed experiments and Anova.
Visual Factory is a Lean concept that offers much to Six Sigma, too. We use it to communicate information quickly and easily, using graphics.
Regression Analysis is a way of estimating the relationships between different variables by examining the behavior of the system.
The Lean Concepts Study guide will help you review the philosophy and application of Lean. These concepts are important to modern practices.