Standard Deviations

[Scottcom4]

Good Afternoon,

Does anyone know how to calculate 2 standard deviations of a variable within a dataset?

Thank you in advance. Message was edited by: Scottcom4

[Paige]

If you mean doing the std dev calculations entirely within a data step, I'm tempted to say its possible, but probably not worth the effort. PROC MEANS is much easier.

[Doc_Duke]

If what you want is to add the 2SD to the dataset, you can do it easily with an aggregate function in PROC SQL.

Doc