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https://issues.apache.org/jira/browse/ARROW-13691?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17403184#comment-17403184
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David Li commented on ARROW-13691:
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Presumably we should go all the way and support ScalarAggregateOptions
(skip_nulls, min_count) here. (Though consequently I wonder if having min_count
default to 1 in C++/Python would lead to surprises.)
> [C++] Add option to handle NAs to VarianceOptions
> -------------------------------------------------
>
> Key: ARROW-13691
> URL: https://issues.apache.org/jira/browse/ARROW-13691
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Nic Crane
> Priority: Major
> Labels: kernel
>
> When calling the "variance", "stddev", "hash_variance", and "hash_stddev"
> kernels, there is no option to handle NA values and they are currently
> ignored - could we have an option added, so that if there are NA values, we
> get an NA back?
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