The following table groups SAS operators according to their priority of evaluation (first column). In compound expressions, SAS evaluates the part of the expression that contains operators from Group ...

The report builds to the description of a completely generalized sweep operator that computes and stores (X'X)-, (X'X)-X'X, (X'X)-X'Y, and Y'Y-Y'X(X'X)-X'Y, all in the space of a single ...