I have a correlation matrix that does the KMO index. In my research, I have only a correlation matrix of 7 variables. I need to do the KMO index but most softwares do not get input a correlation matrix.
What can I do?
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Formula for KMO is [here](https://stats.stackexchange.com/a/229267/3277). You will have to compute the matrix of partial correlations, as described [here](https://stats.stackexchange.com/a/43224/3277) in footnote. – ttnphns Jan 31 '22 at 18:24