title: SAS how to prepare variables before modeling
body: <p>i have to make a credit risk model in SAS.
  In data I have about 300 variables and I have to prepare them before modeling. I have to group every variables by 3 categories. I don't know how to group them. I thought to count variance and then divide them? But I don't know in what way and how to do this in SAS. Do you have any ideas?</p>