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58 Commits

Author SHA1 Message Date
Raymond Hettinger 4a5cccb02b
bpo-20499: Rounding error in statistics.pvariance (GH-28230) 2021-09-08 22:00:12 -05:00
Raymond Hettinger 793f55bde9
bpo-39218: Improve accuracy of variance calculation (GH-27960) 2021-08-30 20:57:30 -05:00
Irit Katriel f5d7a8d29c
bpo-44960: add regression test for geometric_mean with mixed int/floa… (#27856) 
Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
 2021-08-20 14:08:21 +01:00
Zack Kneupper 2f3a87856c
bpo-44151: linear_regression() minor API improvements (GH-26199) 2021-05-24 17:30:58 -07:00
Raymond Hettinger be4dd7fcd9
bpo-44150: Support optional weights parameter for fmean() (GH-26175) 2021-05-20 20:22:26 -07:00
Tymoteusz Wołodźko 09aa6f914d
bpo-38490: statistics: Add covariance, Pearson's correlation, and simple linear regression (#16813) 
Co-authored-by: Tymoteusz Wołodźko <twolodzko+gitkraken@gmail.com
 2021-04-25 14:45:09 +03:00
Raymond Hettinger cc3467a57b
bpo-38308: Add optional weighting to statistics.harmonic_mean() (GH-23914) 2020-12-23 19:52:09 -08:00
Hai Shi 79bb2c93f2
bpo-40275: Use new test.support helper submodules in tests (GH-21743) 2020-08-06 13:51:29 +02:00
Raymond Hettinger d71ab4f738
bpo-40855: Fix ignored mu and xbar parameters (GH-20835) 2020-06-13 15:55:52 -07:00
Tzanetos Balitsaris b809717c1e
bpo-40331: Increase test coverage for the statistics module (GH-19608) 2020-05-13 13:29:31 +03:00
Raymond Hettinger 70f027dd22
bpo-40290: Add zscore() to statistics.NormalDist. (GH-19547) 2020-04-16 10:25:14 -07:00
Tim Gates c18b805ac6 bpo-39002: Fix simple typo: tranlation -> translation (GH-17517) 2019-12-09 09:42:17 -08:00
Raymond Hettinger 5eabec022b
bpo-38521: Fix error in NormalDist.__eq__() (GH-16840) 2019-10-18 14:20:35 -07:00
Raymond Hettinger 4db25d5c39
bpo-36018: Address more reviewer feedback (GH-15733) 2019-09-08 16:57:58 -07:00
Min ho Kim 39d87b5471 Fix typos mostly in comments, docs and test names (GH-15209) 2019-08-30 16:21:19 -04:00
Dong-hee Na 8ad22a4226 bpo-37798: Test both Python and C versions in test_statistics.py (GH-15453) 2019-08-24 10:51:20 -07:00
Neil Schemenauer 52a48e62c6
bpo-37707: Exclude expensive unit tests from PGO task (GH-15009) 
Mark some individual tests to skip when --pgo is used.  The tests
marked increase the PGO task time significantly and likely don't
help improve optimization of the final executable.
 2019-07-30 11:08:18 -07:00
Raymond Hettinger 02c91f59b6
bpo-36324: Make internal attributes for statistics.NormalDist() private. (GH-14871) 
* Make internals private

* Finish making mu and sigma private

* Add missing __hash__() method

* Add blurb
 2019-07-21 00:34:47 -07:00
Raymond Hettinger e917f2ed9a
bpo-36546: Add more tests and expand docs (#13406) 2019-05-18 10:18:29 -07:00
Xtreak 874ad1b3b4 Fix typo: quaatile to quantile (GH=13001) 2019-05-02 14:20:58 -04:00
Raymond Hettinger b0a2c0fa83
bpo-36018: Test idempotence. Test two methods against one-another. (GH-13021) 2019-04-29 23:47:33 -07:00
Raymond Hettinger db81ba1393
bpo-36546: More tests: type preservation and equal inputs (#13000) 2019-04-28 21:31:55 -07:00
Raymond Hettinger 9013ccf6d8
bpo-36546: Add statistics.quantiles() (#12710) 2019-04-23 00:06:35 -07:00
Raymond Hettinger 6463ba3061
bpo-27181: Add statistics.geometric_mean() (GH-12638) 2019-04-07 09:20:03 -07:00
Raymond Hettinger d1e768a677
bpo-36326: Let inspect.getdoc() find docstrings for __slots__ (GH-12498) 2019-03-25 13:01:13 -07:00
Raymond Hettinger 2afb598618 bpo-36324: NormalDist() add more tests and update comments (GH-12476) 
* Improve coverage.
* Note inherent limitations of the accuracy tests


https://bugs.python.org/issue36324
 2019-03-20 13:28:59 -07:00
Raymond Hettinger 714c60d7ac
bpo-36324: Add inv_cdf() to statistics.NormalDist() (GH-12377) 2019-03-18 20:17:14 -07:00
Raymond Hettinger fc06a192fd
bpo-35892: Fix mode() and add multimode() (#12089) 2019-03-12 00:43:27 -07:00
Raymond Hettinger 1f58f4fa6a Refine statistics.NormalDist documentation and improve test coverage (GH-12208) 2019-03-06 23:23:55 -08:00
Raymond Hettinger 318d537daa
bpo-36169 : Add overlap() method to statistics.NormalDist (GH-12149) 2019-03-06 22:59:40 -08:00
Raymond Hettinger 18ee50d5da Add more tests for pdf() and cdf() (GH-12190) 2019-03-06 02:31:14 -08:00
Raymond Hettinger ef17fdbc1c bpo-36018: Add special value tests and make minor tweaks to the docs (GH-12096) 
https://bugs.python.org/issue36018
 2019-02-28 09:16:25 -08:00
Raymond Hettinger 9e456bc70e bpo-36018: Add properties for mean and stdev (GH-12022) 
Responding to suggestions on the tracker and some off-line suggestions.

Davin suggested that english named accessors instead of greek letters would result in more intelligible user code. Steven suggested that the parameters still need to be *mu* and *theta* which are used elsewhere (and I noted those parameter names are used in linked-to resources). 

Michael suggested proving-out the API by seeing whether it generalized to *Lognormal*.  I did so and found that Lognormal distribution parameters *mu* and *sigma*  do not represent the mean and standard deviation of the lognormal distribution (instead, they are for the underlying regular normal distribution).

Putting these ideas together, we have NormalDist parameterized by *mu* and *sigma* but offering English named properties for accessors.  That gives lets us match other API that access mu and sigma, it matches the external resources on the topic, gives us clear english names in user code. The API extends nicely to LogNormal where the parameters and the summary statistic accessors are not the same.


https://bugs.python.org/issue36018
 2019-02-24 11:44:55 -08:00
Raymond Hettinger 79fbcc597d bpo-36018: Make __pos__ return a distinct instance of NormDist (GH-12009) 
https://bugs.python.org/issue36018
 2019-02-23 22:19:01 -08:00
Raymond Hettinger 11c7953165
bpo-36018: Add the NormalDist class to the statistics module (GH-11973) 2019-02-23 14:44:07 -08:00
Raymond Hettinger 47d9987247
bpo-35904: Add statistics.fmean() (GH-11892) 2019-02-21 15:06:29 -08:00
Serhiy Storchaka 2e576f5aec bpo-30144: Import collections ABC from collections.abc rather than collections. (#1263) 2017-04-24 09:05:00 +03:00
Steven D'Aprano fb315dbe82 Issue #27181 remove geometric_mean and defer for 3.7. 2016-10-05 03:24:45 +11:00
Steven D'Aprano a790fe7ff8 Remove expected failure from test of _product internal function. 2016-08-24 13:54:31 +10:00
Steven D'Aprano d6ea3011c5 Remove support for nth root of negative numbers with odd powers. 
Although nth roots of negative numbers are real for odd n, the
statistics module doesn't make use of this. Remove support for
negative roots from the private _nth_root function, which
simplifies the test suite.
 2016-08-24 12:48:12 +10:00
Victor Stinner e3f1e8a9d3 Issue #27181: Skip tests known to fail until a fix is found 2016-08-16 22:22:21 +02:00
Steven D'Aprano 9a2be91c6b Issue27181 add geometric mean. 2016-08-09 13:58:10 +10:00
Steven D'Aprano e7fef52f98 Tighten up test of harmonic mean on a single value. 2016-08-09 13:19:48 +10:00
Steven D'Aprano a474afdddc Add harmonic mean and tests. 2016-08-09 12:49:01 +10:00
Benjamin Peterson ab078e9ed1 Backed out changeset af29d89083b3 (closes #25548) (closes #27498) 2016-07-13 21:13:29 -07:00
Steven D'Aprano 8c115a46e7 Issue27139 patch by Julio C Cardoza. 2016-07-08 02:38:45 +10:00
Kushal Das 5801ecb440 Issue #25548: Showing memory address of class objects in repl 2016-06-04 16:21:13 -07:00
Steven D'Aprano 3b06e24352 Issue 26002 and 25974 
patches by Upendra Kumar and Stefan Krah
speed up median by using bisect, and general speedup for Decimals using as_integer_ratio
 2016-05-05 03:54:29 +10:00
Stefan Krah 2335f44d8e Issue #25928: Temporarily disable some tests in test_statistics in order 
to sort out its assumptions about the as_integer_ratio() interface.
 2015-12-29 00:11:36 +01:00
Steven D'Aprano b28c3275c7 Issue #25177: Fixed problem with the mean of very small and very large numbers. 2015-12-01 19:59:53 +11:00