April 25, 2018

Statistical Process Control for Dummies

March 9, 2016

If learning complex math, arithmetic, or statistics isn’t needed then why introduce Statistical Process Control or SPC for short? SPC simply put is a quality control method employing statistical methods. Statistical Process Control is applied in order […]

Introduction to Equal Variance Assumption

January 12, 2016

Use of Equal Variance Assumption with ANOVA The equal variance assumption is important in statistics because it applies to two of the most widely used tools, the two-sample t-test, and Analysis of Variance (ANOVA). Both […]

A Simple ANOVA in Excel

May 21, 2014

A Simple ANOVA in Excel One of the most important steps in any Six Sigma project is the ANOVA or Analysis of Variance.  ANOVA is found in the Analyze phase of the DMAIC methodology (Define-Measure-Analyze-Improve-Control). […]