Discovering the ‘Real’ Data in Multi-Vari Analysis Charting
David M Plum, Heather Foyt, Joel Jacobson

Abstract
Multi-Vari Analysis Charts are distinct from multivariate control charts. A Multi-Vari Analysis Chart is graphical and is helpful in assessing variability due to three or more factors. It clarifies and simplifies the study of the spread of individual measurements in a sample. In contrast, the multivariate control chart is complex in construction and data interpretation. The Multi-Vari Analysis Chartiscurrently underutilized by practitioners. T the value of is discovering the ‘hidden data’ in the Multi-Vari Analysis Chart over both the multivariate and͞ X R control charts.

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