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82 Commits

Author SHA1 Message Date
Raymond Hettinger 41554ef0e0
Stronger tests for the statistics kernel formulas (gh-120506) 2024-06-14 10:21:35 -05:00
Raymond Hettinger e378dc15b5
Refactor (mostly rearrange) the statistics module (gh-119930) 2024-06-01 22:07:46 -05:00
Raymond Hettinger ce2ea7d629
Minor speed/accuracy improvement for kde() (gh-119910) 2024-06-01 10:49:14 -05:00
Kirill Podoprigora 027e6d88fb
[tests]: Mark ``test_statistics.test_kde_random`` with a ``requires_resource('cpu')`` decorator (#118801) 
Mark test_kde_random with a requires_resource('cpu') decorator
 2024-05-09 11:16:37 +03:00
Raymond Hettinger 5092ea238e
Fix negative bandwidth test and add online code path test. (gh-118600) 2024-05-05 12:29:23 -05:00
Raymond Hettinger fd0ea63f82
Minor edit: Simplify and tighten the distribution test (gh-118585) 
Simplify and tighten the distribution test
 2024-05-05 01:35:06 -05:00
Raymond Hettinger 42dc5b4ace
gh-115532 Add kde_random() to the statistic module (#118210) 2024-05-03 23:13:36 -05:00
Raymond Hettinger a1e948edba
Add cumulative option for the new statistics.kde() function. (#117033) 2024-03-24 04:35:58 -05:00
Raymond Hettinger 6d34eb0e36
gh-115532: Add kernel density estimation to the statistics module (gh-115863) 2024-02-25 17:46:47 -06:00
Raymond Hettinger f3bff4ee9d
gh-112540: Support zero inputs in geometric_mean() (gh-112880) 2023-12-08 12:05:56 -06:00
Raymond Hettinger 62405c7867
gh-110150: Fix base case handling in quantiles() (gh-110151) 2023-09-30 23:35:54 -05:00
Serhiy Storchaka b9831e5c98
Use unittest test runner for doctests in test_statistics (GH-108921) 2023-09-07 23:08:55 +03:00
Serhiy Storchaka f3ba0a74cd
gh-108416: Mark slow test methods with @requires_resource('cpu') (GH-108421) 
Only mark tests which spend significant system or user time,
by itself or in subprocesses.
 2023-09-02 07:45:34 +03:00
Raymond Hettinger 52e0797f8e
Extend _sqrtprod() to cover the full range of inputs. Add tests. (GH-107855) 2023-08-11 11:19:19 -05:00
Raymond Hettinger 457e4d1a51
GH-102670: Use sumprod() to simplify, speed up, and improve accuracy of statistics functions (GH-102649) 2023-03-13 20:06:43 -05:00
Nikita Sobolev bef9efabc3
GH-99155: Fix `NormalDist` pickle with `0` and `1` protocols (GH99156) 2022-11-06 20:56:41 -06:00
Raymond Hettinger 29c8f80760
GH-95861: Add support for Spearman's rank correlation coefficient (GH-95863) 2022-08-18 13:48:27 -05:00
Raymond Hettinger 4395ff1e6a
Statistics inv_cdf sync with corresponding random module normal distributions (#95265) 2022-07-26 02:23:33 -05:00
Raymond Hettinger e01eeb7b4b
Fix inconsistent return type for statistics median_grouped() gh-92531 (#92533) 2022-05-09 02:08:41 -05:00
Raymond Hettinger 5212cbc261
Clean-up and simplify median_grouped(). Vastly improve its docstring. (#92324) 2022-05-05 03:01:07 -05:00
Raymond Hettinger a39f46afde
bpo-45876: Correctly rounded stdev() and pstdev() for the Decimal case (GH-29828) 2021-11-30 18:20:08 -06:00
Raymond Hettinger af9ee57b96
bpo-45876: Improve accuracy for stdev() and pstdev() in statistics (GH-29736) 
* Inlined code from variance functions

* Added helper functions for the float square root of a fraction

* Call helper functions

* Add blurb

* Fix over-specified test

* Add a test for the _sqrt_frac() helper function

* Increase the tested range

* Add type hints to the internal function.

* Fix test for correct rounding

* Simplify ⌊√(n/m)⌋ calculation

Co-authored-by: Mark Dickinson <dickinsm@gmail.com>

* Add comment and beef-up tests

* Test for zero denominator

* Add algorithmic references

* Add test for the _isqrt_frac_rto() helper function.

* Compute the 109 instead of hard-wiring it

* Stronger test for _isqrt_frac_rto()

* Bigger range

* Bigger range

* Replace float() call with int/int division to be parallel with the other code path.

* Factor out division. Update proof link. Remove internal type declaration

Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
 2021-11-26 22:54:50 -07:00
Raymond Hettinger d2b55b07d2
bpo-45766: Add direct proportion option to linear_regression(). (#29490) 
* bpo-45766: Add direct proportion option to linear_regression().

* Update 2021-11-09-09-18-06.bpo-45766.dvbcMf.rst

* Use ellipsis to avoid round-off issues.

* Update Misc/NEWS.d/next/Library/2021-11-09-09-18-06.bpo-45766.dvbcMf.rst

Co-authored-by: Erlend Egeberg Aasland <erlend.aasland@innova.no>

* Update signature in main docs

* Fix missing comma

Co-authored-by: Erlend Egeberg Aasland <erlend.aasland@innova.no>
 2021-11-21 08:39:26 -06:00
Raymond Hettinger 48744db70e
bpo-45852: Fix the Counter/iter test for statistics.mode() (GH-29667) 
Suggested by Stefan Pochmann.
 2021-11-20 11:01:09 -06:00
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