To Transform Data, or Not to Transform, That is the Question!

In a previous article in this series I discussed whether or not to transform data that is non-normally distributed in order to make the data normally distributed.  In that article I stated the following: “Data that follow a distribution that is either not symmetric or that is symmetric but not bell shaped are said to […] read more

On March 17th, 2018, posted in: Project Management by

The SIPOC Diagram – A Basic Process Mapping Tool

One of the first steps in any improvement project is to describe the current process using a map of some sort.  One basic mapping tool is the Supplier-Input-Process-Output-Customer diagram, commonly referred to as a SIPOC diagram.  Another commonly used tool is the cross-functional process map. Both of these tools are important first steps in understanding […] read more

On January 15th, 2018, posted in: Project Management by

68. Evaluating Attribute Inspectors Using Attribute Agreement Analysis

We typically think about the reliability and reproducibility of a gage in the context of measuring some characteristic using continuous (or variable) data.  Gage R&R studies conducted on this type of data are an application of the Analysis of Variance (ANOVA) method.  We evaluate how much variation is introduced by the people using the gage […] read more

Increasing Your Personal Power as a Project Manager

In order to earn the Six Sigma Black Belt Certificate, our students are required to plan and execute a real world project that results in measurable improvement.  To help them to be more successful, I challenge them to find ways to increase the amount of personal power that they have as the manager of their […] read more

On September 21st, 2017, posted in: Articles, Project Management, Six Sigma by Tags: , ,