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https://issues.apache.org/jira/browse/MADLIB-970?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15172701#comment-15172701
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Frank McQuillan commented on MADLIB-970:
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[~gautamsm] Is this a universal rule? Or should there be an input param with
"20% of cells < 5" as the default?
> Log a warning message when running Chi squared independence test if more
> than 20% of the cells in the contingency table have expected values < 5.
> --------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: MADLIB-970
> URL: https://issues.apache.org/jira/browse/MADLIB-970
> Project: Apache MADlib
> Issue Type: New Feature
> Components: Module: Inferential Statistics
> Reporter: Gautam Muralidhar
> Priority: Minor
>
> Log a warning message when running Chi squared independence test if more
> than 20% of the cells in the contingency table have expected values < 5. It
> might be acceptable to not proceed with the computation as well if more than
> 20% of the cells in the contingency table have expected values < 5.
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