“Is that Miss or Mrs.?” the receptionist asked. “Miss,” replied the elderly lady. “My friends just call me Di.” The receptionist nodded as she typed. “Got it. Miss Di...
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24Mar
Tough Times and Lean Six Sigma
So, despite our best efforts, here we are. The question is, what is our proper role as quality and process improvement professionals?
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24Mar
Hypergeometric probabilities using Minitab
Article Revised: March 26, 2019 View video If you are interested in Six Sigma Certification and Training, contact Pyzdek Institute today!
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24Mar
How to perform analysis of means using Minitab
Article Revised: March 26, 2019 View video If you are interested in Six Sigma Certification and Training, contact Pyzdek Institute today!
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24Mar
How to conduct a one-way ANOVA using Excel
One method of analyzing the difference between group means is analysis of variance. The ANOVA procedure follows the classical, statistical hypothesis, inference-testing format. First, state the null and alternative...
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24Mar
How to Create a Pareto Diagram Using MS-Excel
One tool that you will find yourself using several times during your Six Sigma project is Pareto analysis. Pareto analysis is named after the eminent 19th century Italian economist...
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06Mar
What the Heck is Multicollinearity?
Article Revised: March 26, 2019 A Lean Six Sigma Master Black Belt was perplexed by the software’s correlation and regression analysis output. The results were pure nonsense. In addition to...
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06Mar
Virtual DOE, Data Mining and Artificial Neural Networks
A key feature of Six Sigma is the integrated use of design of experiments and robust design of product and process. Experiments are an important part of this; they...
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06Mar
SPC vs. Knowledge
Have you ever asked yourself just what control limits actually measure? Oh sure, there are the standard statistical answers: central tendency, process dispersion, capability and so on. But what...
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06Mar
Small Samples
What is “Small”? Not enough data. We’ve all been there before. It may be that the production rate is too low. (I’ve worked with processes where one unit per...
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