Proc Means and Summary

In the earlier versions of SAS, Proc Means and Summary had distinct features. Over the last few versions, the only difference between the two procedures are as follows:

• Proc Means outputs the results in the listing window or in any other open output destination, whereas Proc Summary creates a dataset by default. You cannot execute a Proc Summary without an output statement.
• In the absence of a Var statement, Proc Means analyzes all numeric variables. Proc Summary, in the same situation, only produces a count of the observations.

Proc Means

The simplest form of Proc Means is as follows:

Proc Means Data = Transactions;
Run;

This will give us the following output:

We can also add a Class variable to the...