pandas.core.groupby.GroupBy.std  
GroupBy.std(ddof=1, *args, **kwargs) [source]
 
Compute standard deviation of groups, excluding missing values For multiple groupings, the result index will be a MultiIndex    
Parameters:

ddof : integer, default 1 degrees of freedom     See also pandas.Series.groupby, pandas.DataFrame.groupby, pandas.Panel.groupby  


    
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