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numpy.ma.std
ma.std(self, axis=None, dtype=None, out=None, ddof=0, keepdims=<no value>) = <numpy.ma.core._frommethod object>- 
    
Returns the standard deviation of the array elements along given axis.
Masked entries are ignored.
Refer to
numpy.stdfor full documentation.See also
numpy.ndarray.std- 
       
corresponding function for ndarrays
 numpy.std- 
       
Equivalent function
 
 
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 https://numpy.org/doc/1.20/reference/generated/numpy.ma.std.html