Currently the compute kernels stddev and variance automatically ignore NAs, but it would be useful if there was an option to toggle this behaviour

Reporter: Nicola Crane / @thisisnic
Assignee: David Li / @lidavidm
Watchers: Rok Mihevc / @rok

Related issues:

• [C++] Add option to handle NAs to VarianceOptions (duplicates)

_{Note: This issue was originally created as ARROW-12615. Please see the migration documentation for further details.}