topic How standardization happening in SAS while doing PCA? in Statistical Procedures

How standardization happening in SAS while doing PCA?

sdhilip — Sat, 20 Apr 2019 00:13:59 GMT

I am doing PCA in SAS guide. Just wanted to know the following?

Was standardize not required in SAS while performing PCA? As it directly calculates the correlation matrix when I run PCA ( proc princomp)

Kindly advise.

WarrenKuhfeld — Sat, 20 Apr 2019 03:41:02 GMT

Yes, Proc PrinComp can create a correlation matrix from raw data, so you do not need to standardize the data first.

sdhilip — Sat, 20 Apr 2019 03:43:20 GMT

Thanks a lot.