In a nutshell, neither is “incorrect”. Pandas uses the unbiased estimator (N-1
in the denominator), whereas Numpy by default does not.
To make them behave the same, pass ddof=1
to numpy.std()
.
For further discussion, see
In a nutshell, neither is “incorrect”. Pandas uses the unbiased estimator (N-1
in the denominator), whereas Numpy by default does not.
To make them behave the same, pass ddof=1
to numpy.std()
.
For further discussion, see