Which Index is Representative of How the Stock Market is Really Performing?

In an earlier article in this series I discussed the use of sample data drawn from a larger population for the purposes of making decisions.  The data in the sample must be representative of the larger population in order for it to be useful in decision making.  Consider the stock market in general.   What is […] read more

SWOT Analysis

One of the tools that may be used to define the current state of a process is SWOT analysis.  Our Black Belt students are required to perform a SWOT analysis as part of their Black Belt project. SWOT is an acronym that stands for Strengths, Weaknesses, Opportunities and Threats.  Strengths and weaknesses are internal to […] read more

On February 16th, 2018, posted in: Articles, Six Sigma by Tags: ,

Taguchi Methods for Robust Design and the P-Diagram

In previous articles in this series I introduced Designed Experiments (Article 28) and Taguchi Methods (Article 32).   In this article I will introduce the Parameter Diagram, aka P-diagram, and explain how the P-diagram is used in conjunction with Designed Experiments as part of the robust design process. The P-diagram is used to classify all of […] read more

On December 15th, 2017, posted in: Articles, Six Sigma by Tags: , , ,

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