Bill Smith

Thinkers1929 to 1993Quality engineer

Works

  • Six Sigma quality program at Motorola, 1986

In Thinking Tools

Known for

William B. Smith Jr., a Motorola quality engineer who introduced Six Sigma at Motorola in 1986, a program for cutting defects to a few per million opportunities. Mikel Harry developed its four-stage Measure, Analyze, Improve, Control cycle.

Caveat: The Define stage that makes the cycle DMAIC was added when General Electric adopted Six Sigma in the mid-1990s, with no single named author.

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