API/BUG/ENH: ewmvar/cov debiasing factors; add 'adjust' to ewmvar/std/vol/cov/corr; ewm*() min_periods#7926

Merged

jreback merged 1 commit intopandas-dev:masterfrom

seth-p:ewmvar_bias_correction

Sep 10, 2014

Commits on Sep 3, 2014

BUG/ENH/API: ewm* debias, 'adjust', min_periods; roll/exp_var/std 1 val
seth-p
committed