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https://issues.apache.org/jira/browse/MADLIB-895?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15159933#comment-15159933
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ASF GitHub Bot commented on MADLIB-895:
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GitHub user fmcquillan99 opened a pull request:
https://github.com/apache/incubator-madlib/pull/23
fix hypothesis test docs and examples
related to
https://issues.apache.org/jira/browse/MADLIB-895
Chi-squared independence test docs and examples had some mistakes and were
not clear.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/fmcquillan99/incubator-madlib
hypothesis-test-docs
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-madlib/pull/23.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #23
----
commit cd9919be23a6d144f1c27f826f881f359892b3a2
Author: Frank McQuillan <[email protected]>
Date: 2016-02-24T00:12:57Z
fix hypothesis test docs and examples
----
> Incorrect examples in hypothesis tests documentation
> ----------------------------------------------------
>
> Key: MADLIB-895
> URL: https://issues.apache.org/jira/browse/MADLIB-895
> Project: Apache MADlib
> Issue Type: Bug
> Components: Module: Inferential Statistics
> Reporter: Rahul Iyer
> Assignee: Frank McQuillan
> Priority: Minor
> Fix For: v1.9
>
>
> The SQL and results for the example for Chi-2 tests is wrong. The
> documentation shows the result as
> {code}
> statistic | p_value | df | phi |
> contingency_coef
>
> ------------------+----------------------+----+------------------+-------------------
> 138.289841626008 | 2.32528678709871e-25 | 9 | 2.93991753313346 |
> 0.946730727519112
> {code}
> whereas it should be,
> {code}
> statistic | p_value | df | phi |
> contingency_coef
> ------------------+----------------------+----+-----------------+-------------------
> 320.125868955635 | 1.39464882809491e-63 | 9 | 4.4730154045931 |
> 0.975909209031126
> (1 row)
> {code}
> The SQL also has a couple of errors and does not run as is.
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