W. Edwards Deming Quotes
One cannot be successful on visible figures alone ... the most important figures that one needs for management are unknown or unknowable, but successful management must nevertheless take account of them.
Citations
Deming, W. Edwards. Out of the Crisis. Massachusetts Institute of Technology, Center for Advanced Engineering Study, 1986, p. 121.
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Dr. William Edwards Deming was an American engineer, statistician, professor, author, lecturer, and management consultant. Educated initially as an electrical engineer and later specializing in mathematical physics, he helped develop the sampling techniques still used by the U.S. Department of the Census and the Bureau of Labor Statistics.