In this situation, it was shown by Gnanadesikan and Kettenring (1972), using a result of Wilks (1962), that T 2 i is exactly distributed as a multiple of a variable with a beta distribution.
In many control chart applications, it is useful to relate the variation of the process to other variables that are being observed simultaneously with the variable that is charted. You can use the ...
Discover how quality control charts help track product standards, pinpoint issues, and ensure processes meet specifications with this essential tool for quality assurance.
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