On 10E. Approximation section of J Dictionary, there is a definition for "linear least squares fit of x and y".
It's given as d1=: ] (] +/ .* %.) 1: ,. [ What is the expected way of using it, and what does the result mean? I first thought it returned the least squares estimators(beta and alpha), but it didn't. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
