simtb_regression() - Performs least squares multiple linear regression Usage: >> [t, beta] = simtb_regression(X,y) INPUTS: X = [mobservations x nregressors] design matrix y = [mobservations x 1] vector of observations OUTPUTS: t = [nregressors x 1] vector of t-statistics for regressors beta = [nregressors x 1] vector of beta coefficients for regressors see also: simtb_match_EST2TRUE()