Multivariate Statistical Quality Control Using R by Edgar Santos-Fernández

Author:Edgar Santos-Fernández
Language: eng
Format: epub
Publisher: Springer New York, New York, NY

3.2 Multivariate Process Capability Vector

The Multivariate Process Capability Vector was introduced by Shahriari et al. (1995) based on the pioneer work of Hubele et al. (1991). It consists of a three-component vector which is defined as:

(3.1)

and is based on the assumption that the process follows a multivariate normal distribution.

The first component of this vector is CpM that is a ratio of the areas or volumes between the engineering tolerances and the modified process region.

(3.2)

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