Exclusive Content & Downloads from ASQ

Effect of Measurement Error on Shewhart Control Charts

Summary: [This abstract is based on the authors' abstract. A longer abstract is available on the journal's website.]

Measurement error has been shown to reduce the ability to detect a given change in the mean or variance of a quality characteristic. The effect of measurement error on the performance of X-bar and S(2) charts using a linear covariate is investigated. The loss of power in detecting parameter shifts in the underlying process variable due to measurement error makes it desirable to take multiple measurements for each of the items in a subgroup. A cost model for selection of an optimal sampling plan is described. Also investigated is a model involving measurement error variance that is a linearly increasing function of the process mean.

Anyone with a subscription, including Site and Enterprise members, can access this article.

Other Ways to Access content:

Join ASQ

Join ASQ as a Full member. Enjoy all the ASQ member benefits including access to many online articles.

Subscribe to Journal of Quality Technology

Access this and ALL OTHER Journal of Quality Technology online articles. You'll also receive the print version by mail.

  • Topics:
  • Keywords: X-bar control charts,Measurement error,Covariance,Cost management
  • Author: Linna, Kenneth W.; Woodall, William H.
  • Journal: Journal of Quality Technology