Doc: Added docstring to Groupby mean#20910

Merged

jreback merged 8 commits intopandas-dev:masterfrom

cxl923cc:groupby-mean

Jul 7, 2018

Commits on May 1, 2018

added examples to groupby-mean
Catherine Chen
committed
added what is returned
Catherine Chen
committed

Commits on May 2, 2018

adjust the sequence of descriptions by putting examples after explaination
Catherine Chen
committed

Commits on May 8, 2018

Created long summary and moved examples to the end and cleaned format
Catherine Chen
committed
Cleaned format and added ... to codes with continued lines
Catherine Chen
committed

Commits on May 15, 2018

Added a blank line for extended summary. Improved description of examples. Changed dashlines to blank lines.
Catherine Chen
committed

Commits on Jul 7, 2018

Merge remote-tracking branch 'upstream/master' into groupby-mean
Matt Roeschke
committed
formatting and other examples
Matt Roeschke
committed