Hotelling's T2 contributions formula

[#1]

In articles, for t2 contributions using formula (X-colMean(X))/std.dev. But in Column Formula of T2 variable contribution, saved from Model Driven Multivariate Control Chart(JMP 16), we can see multiplier before (X-colMean(X))/std.dev. For Example:

EGrishin_0-1630996172636.png

What is this?

1.98849210478157 * :_07MAA10CT111 + 1.68074231499255 * :_07MAA10CT109 + (-1779.94365628861)

[#2 · Accepted solution]

Not a statistical explanation...

My guess is that you have a contribution formula for one of the variables you have. I think you sum all of the contribution formulas together you should end up with the T2 (or very close to it).

Using Iris.jmp as example:

jthi_0-1630999406826.png

jthi_1-1630999971980.png

[#3]

Thanks!)