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https://issues.apache.org/jira/browse/MATH-1034?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13782341#comment-13782341
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Thorsten Schäfer commented on MATH-1034:
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Thanks Phil!
Regarding improvement 1: I tried this in my first implementation attempt, but
it lead to wrong results. When I read more about how the test value is
calculated, I understood it as follows: your suggested approach would work in a
case where p=0.5 as the distribution is then symmetrical. However, for other
values this is not the case. For instance, if we test with p=0.99, there's
basically no room on the right-side for errors, but a lot of room on the left
side. The test tried to capture the most extreme outliners for a given
significance level and in this example they will be most likely all on the left
side - so just considering one side and doubling should not work. (At least
that's what my understanding is now...)
> Add binomial test
> -----------------
>
> Key: MATH-1034
> URL: https://issues.apache.org/jira/browse/MATH-1034
> Project: Commons Math
> Issue Type: Wish
> Affects Versions: 3.2
> Reporter: Thorsten Schäfer
> Priority: Minor
> Attachments: binomialTest.patch, binomialTest.patch
>
>
> A binomial test would be a nice addition to commons-math. I might supply a
> patch in the near future. I guess the interface should be similar to the
> other tests, i.e., a method to get the p-value and a method returning a
> boolean indicating reject/non-reject.
> Is there a policy about using Enumerations in commons-math? For instance, in
> R you can test two-sided, less or greater. This could be done using an
> enumeration in Java, but I'm not sure if this is discouraged for backward
> compatibility reasons...
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