ariya/esprima — pull request #167 by oxyc (2013-03-23 16:02:51+00:00)
Title: Fix variance unit conversion.

"If all values are scaled by a constant, the variance is scaled by the
square of that constant." - http://en.wikipedia.org/wiki/Variance

https://code.google.com/p/esprima/issues/detail?id=397