issues: 2052840951

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id node_id number title user state locked assignee milestone comments created_at updated_at closed_at author_association active_lock_reason draft pull_request body reactions performed_via_github_app state_reason repo type
2052840951 I_kwDOAMm_X856W933 8566 Use `ddof=1` for `std` & `var` 5635139 open 0     2 2023-12-21T17:47:21Z 2023-12-27T16:58:46Z   MEMBER      

What is your issue?

I've discussed this a bunch with @dcherian (though I'm not sure he necessarily agrees, I'll let him comment)

Currently xarray uses ddof=0 for std & var. This is: - Rarely what someone actually wants — xarray data is almost always a sample of some underlying distribution, for which ddof=1 is correct - Inconsistent with pandas

OTOH: - It is consistent with numpy - It wouldn't be a painless change — folks who don't read deprecation messages would see values change very slightly

Any thoughts?

 
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     13221727 issue

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