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https://issues.apache.org/jira/browse/ARROW-12615?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17349103#comment-17349103
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Rok Mihevc commented on ARROW-12615:
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Currently `ScalarAggregateOptions` has `skip_nulls` and `min_count` (at least
how many non-nulls should input have). Would it make more sense to add `ddof`
to `ScalarAggregateOptions` or `skip_nulls` and `min_count` to
`VarianceOptions` currently used by stddev and variance kernels.
> [C++] Add options for handling NAs to stddev and variance
> ---------------------------------------------------------
>
> Key: ARROW-12615
> URL: https://issues.apache.org/jira/browse/ARROW-12615
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Nic Crane
> Priority: Major
>
> Currently the compute kernels `stddev `and `variance` automatically ignore
> NAs, but it would be useful if there was an option to toggle this behaviour
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