Is Lean Six Sigma Mired in Old Think?
Is Lean Six Sigma stuck in last century thinking? Maybe we just can’t see it. Here’s what I discovered recently.
“I’m Jay Arthur, author of “Lean Six Sigma Demystified” and QI Macros [software].
“Recently, I discovered something and it got me thinking. Now, if you know anything about calculating formulas for an XbarR chart, you know that what you do is if you have some numbers like a subgroup, maybe they got 3.3 and 3.4 or something like that, what you do is calculate for this subgroup what’s the average of the X’s. Well, in this case it’d be 3.3.
