statsmodels/statsmodels — pull request #1169 by guyrt (2013-11-02 02:58:30+00:00)
Title: Test norm resid

Address a few issues listed in #1016

* Added test for norm_resid. As part of this, I made a breaking change by switching norm_resid to a readonly property. This matches the rest of the results.
* Added a NotImplementedError on whiten in RegressionModel

This clears a few of the issues listed.