The Chicken or the Egg: Six Sigma and Lean
How many times have you heard, “Lean is in and Six Sigma is out” from a colleague? The funny thing about this is that I used to hear the same thing 23 years ago. Only then it was, “Lean is in, and quality improvement teams are out.” Little has changed since then.
Does Your Cycle Time Have a Weight Problem?
Understanding a process’ cycle time is extremely important, especially in the context of takt
Killing Time: How to Manage Interruptions
Read this. It won’t be a waste of time.
How Measurement Error Affects the Four Ways We Use Data
Measurement error is generally considered to be a bad thing, and yet there is very little written about how measurement error affects the way we use our measurements.
How Measurement Error Affects the Four Ways We Use Data
Measurement error is generally considered to be a bad thing, and yet there is very little written about how measurement error affects the way we use our measurements.
Four Control Chart Myths from Foolish Experts
There are four statements regarding control charts that are myths and in my experience, just refuse to die.
Histograms: When to Use Your Eyeballs, When Not
Story update 3/29/2011: We corrected an error in the next to last sentence. "p < 0.05" was changed to "p > 0.05."
Histograms: When to Use Your Eyeballs, When Not
Story update 3/29/2011: We corrected an error in the next to last sentence. "p < 0.05" was changed to "p > 0.05."
Cost Reduction ≠ Cost Advantage
An excellent article by Donald Wheeler on the economic cost of quality, “What Is the Zone of Economic Production?” gave me pause to consider the strategic implications of