Tampering in the context of a controlled process is adjusting the process on the basis of outcomes which are within the expected range of variability. The net result is to re-align the process so that an increased proportion of the output is out of specification. The term was introduced in this context by W. Edwards Deming, and he was a strong proponent of using control charts to avoid tampering.

References

*W. Edwards Deming (1994) ''The New Economics for Industry, Government, Education'', 2nd edition, Massachusetts Inst Technology. (Chapter 9.) *Deming, W. Edward (1986), ''Out of the Crisis'', MIT Center for Advanced Engineering Study, 327–32. (2000 edition: ) *Gitlow, Howard; Gitlow, Shelly; Oppenheim, Alan; Oppenheim, Rosa (1989), ''Tools and Methods for The Improvement of Quality'', CRC Press *Krehbiel, T. C. (1994), "Tampering with a Stable Process". ''Teaching Statistics'', 16, 75–79. Quality control {{statistics-stub

See also

References