AllenDowney/ThinkStats2 — pull request #8 by nirs (2014-12-13 14:48:48+00:00)
Title: Fix example code

>>> df.birthwgt_lb.value_counts(sort=False)
Traceback (most recent call last):
File "", line 1, in
TypeError: value_counts() got an unexpected keyword argument 'sort'

Accoring to the output, the author wanted to sort by index.