Control Chart Formulas

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Posts tagged "Control Chart Formulas"

Why Aren’t People Using Control Charts? A Root Cause Analysis

After a hundred years, people still aren’t using control charts. Here’s why:

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“Well hi, I’m Jay Arthur, author of “Lean Six Sigma Demystified” and QI Macros [software].

Control charts just turned a hundred years old, but if you look at the adoption rate for control charts it’s been pretty flat. You see it mainly in manufacturing, you don’t see it much in healthcare.

“We attend two big healthcare quality conferences: At the Magnet conference, out of hundreds of posters, 89% use line and bar charts (which I consider to be last-century technology).

Posted by Jay Arthur in Improvement Insights.

You Don’t Need Formulas or Decision Trees

You don’t need to know Six Sigma Formulas or decision trees to make improvement. Here’s why:

“Hi, I’m Jay Arthur, author of “Agile Process Innovation; Hacking Lean and Six Sigma for Results.”

“Back when I got started in Quality (and maybe many of you), we had to learn formulas to calculate things for control charts and whatever. I spent five days in a control chart class learning how to calculate the formulas for every control chart manually. Now, that did not really teach me anything about the distributions underlying them, it taught me how to calculate them manually. What they didn’t tell us in that class is software can do that for you.

Posted by Jay Arthur in Improvement Insights.