alpmestan/statistics-linreg — pull request #2 by uriba (2012-11-20 10:43:49+00:00)
Title: Fixed erroneous approximation caused by using non-unbiased version of variance in TLS 

TLS used covar, which divides by n-1 to achieve non-biased estimation, on one hand, but S.variance, which divides by n, on the other.
As a result there was some error emerging in the parameters estimation.
Switching to S.varianceUnbiased solved the issue.