(self, ddof=1)
return self.var(ddof=ddof) ** 0.5
Compute standard deviation of elements within window
Compute standard deviation of elements within window
Compute standard deviation of elements within window
def std(self, ddof=1):
        """ Compute standard deviation of elements within window """
        return self.var(ddof=ddof) ** 0.5
def std ( self , ddof = 1 ) : return self . var ( ddof = ddof ) ** 0.5