Expan

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`Full
Changelog <https://github.com/zalando/expan/compare/v1.3.7...v1.3.9>`__

**Merged pull requests:**

- Changed chi-square test, removed frequencies computation
`240 <https://github.com/zalando/expan/pull/240>`__
(`daryadedik <https://github.com/daryadedik>`__)

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`Full
Changelog <https://github.com/zalando/expan/compare/v1.3.6...v1.3.7>`__

**Merged pull requests:**

- Added observed and expected frequencies to chi-square statistics
`239 <https://github.com/zalando/expan/pull/239>`__
(`daryadedik <https://github.com/daryadedik>`__)
- Stop warning about NaNs
`238 <https://github.com/zalando/expan/pull/238>`__
(`aaron-mcdaid-zalando <https://github.com/aaron-mcdaid-zalando>`__)
- stop overriding the warning level
`237 <https://github.com/zalando/expan/pull/237>`__
(`aaron-mcdaid-zalando <https://github.com/aaron-mcdaid-zalando>`__)

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`Full
Changelog <https://github.com/zalando/expan/compare/v1.3.5...v1.3.6>`__

**Merged pull requests:**

- If the number of \*finite\* samples is too small, then the data isn't
valid for analysis
`236 <https://github.com/zalando/expan/pull/236>`__
(`aaron-mcdaid-zalando <https://github.com/aaron-mcdaid-zalando>`__)

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`Full
Changelog <https://github.com/zalando/expan/compare/v1.3.3...v1.3.5>`__

**Merged pull requests:**

- Re-wrote chi-square, removed dropping buckets.
`234 <https://github.com/zalando/expan/pull/234>`__
(`daryadedik <https://github.com/daryadedik>`__)
- check if there are no p values to correct
`233 <https://github.com/zalando/expan/pull/233>`__
(`gbordyugov <https://github.com/gbordyugov>`__)

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`Full
Changelog <https://github.com/zalando/expan/compare/v1.3.2...v1.3.3>`__

**Merged pull requests:**

- Chi-squared test for the variant split check
`228 <https://github.com/zalando/expan/pull/228>`__
(`daryadedik <https://github.com/daryadedik>`__)

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`Full
Changelog <https://github.com/zalando/expan/compare/v1.3.1...v1.3.2>`__

**Merged pull requests:**

- Fix minor typos `231 <https://github.com/zalando/expan/pull/231>`__
(`sdia <https://github.com/sdia>`__)
- custom deepcopy() method for 'StatisticalTest', to save some memory
`230 <https://github.com/zalando/expan/pull/230>`__
(`aaron-mcdaid-zalando <https://github.com/aaron-mcdaid-zalando>`__)
- Updated old multiple correction documentation
`229 <https://github.com/zalando/expan/pull/229>`__
(`daryadedik <https://github.com/daryadedik>`__)
- contributing.rst: Improve the release procedure to ensure that the
up… `226 <https://github.com/zalando/expan/pull/226>`__
(`aaron-mcdaid-zalando <https://github.com/aaron-mcdaid-zalando>`__)