RWLeastSqQRPvtCalc

SourcePro : Business Analysis Module User’s Guide : Using the Classes : Parameter Calculation Classes : Calculation Methods for Linear Regression : RWLeastSqQRPvtCalc

RWLeastSqQRPvtCalc

Class RWLeastSqQRPvtCalc uses essentially the same QR method described in RWLeastSqQRCalc , except that the QR decomposition is formed using pivoting.

Pros:	Calculation succeeds for regression matrices of less than full rank. However, calculations fail if the regression matrix contains a column of all 0s.
Cons:	Slower than the straight QR technique described in RWLeastSqQRCalc.