numpy/numpy — pull request #3337 by seberg (2013-05-16 16:11:06+00:00)
Title: BUG: Correctly pass on ddof paramter on inside np.ma.corrcoef

While ddof has basically no effect on corrcoef, it exists,
but it was not passed on correctly (instead only bias would
be passed on). Fixes gh-3336

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Maybe the whole bias/ddof should be removed/deprecated... but if, that should be synchronized with the np.corrcoef.