Six Sigma

I Plead Guilty

By Ron Pereira Updated on January 13th, 2011

My friend Mark Graban of Lean Blog fame nailed me today… and I deserved it.  Mark commented on my recent post about Lowes missing their numbers.

I was actually as guilty as the folks at Qualpro in how I was trying to assign causation, meaning MVT was the reason Lowes missed their numbers.  The sad thing for me was I blogged about this very concept of correlation, causation, and extrapolation a few months ago here

In my defense I was actually trying to prove a point that Qualpro shouldn’t justify their MVT methodology in this manner… but I fell on the same sword they did. 

Taiichi Ohno states in Workplace Management how he studied the sayings of Confucious as a young child.  One of the sayings Ohno was fond of was, “The Wise Mend their Ways.”  That is what this post is about tonight.

One final comment on this Qualpro/MVT subject.  Oddly enough, today I came across an article written by Forrest W. Breyfogle III from the consulting firm Smarter Solutions.  Mr. Breyfogle is a giant in the Six Sigma world and thus is probably a little biased (like I am I suppose.. biased that is as I am no giant).  In any event he does a nice job explaining his view of this whole Qualpro debate.  Check the whole story out here.

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