CCU12_Precip            Precipitation for June-September 2012 recorded
                        in Kolkata
FitAndResiduals         Computes a linear regression fit and residuals
                        on possibly multivariate responses
IdentityMatrix          Obtains the identity matrix of dimension n
InnerProduct            Computes the Euclidean inner product
L1Regression            Computes a L1 multivariate regression This is
                        the equivalent of median regression when the
                        response is possibly multivariate
Norm                    Computes the Euclidean norm
WLS                     Computes a weighted least squares linear
                        regression on possibly multivariate responses
