pitrou opened a new issue, #45676: URL: https://github.com/apache/arrow/issues/45676
### Describe the enhancement requested We already expose mean, variance and stddev functions. We should add skew and kurtosis for more coverage of common statistics, also with the corresponding hash-aggregate kernels. ### Component(s) C++ -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@arrow.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org