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65 commits

Author SHA1 Message Date
Raymond Hettinger
be4dd7fcd9
bpo-44150: Support optional weights parameter for fmean() (GH-26175) 2021-05-20 20:22:26 -07:00
Raymond Hettinger
b3f65e819f
Apply edits from Allen Downey's review of the linear_regression docs. (GH-26176) 2021-05-16 19:21:14 -07:00
Raymond Hettinger
fdfea4ab16
Improve speed and accuracy for correlation() (GH-26135) 2021-05-15 11:00:51 -07:00
Raymond Hettinger
55b78ce3c4
Eliminate duplicated calculations and unnecessary work for linear regression (GH-25922) 2021-05-06 07:43:13 -07:00
Raymond Hettinger
1add719516
Fix inconsistent fsum vs sum and fmean vs mean (GH-25898) 2021-05-04 11:27:28 -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
30a8b28396
bpo-43147: Remove archaic terminology. (GH-24462) 2021-02-07 16:44:42 -08:00
Raymond Hettinger
cc3467a57b
bpo-38308: Add optional weighting to statistics.harmonic_mean() (GH-23914) 2020-12-23 19:52:09 -08:00
Raymond Hettinger
5aad027db9
Some reformatting (suggested by Black) and minor factoring. (GH-20865) 2020-06-13 19:17:28 -07:00
Raymond Hettinger
d71ab4f738
bpo-40855: Fix ignored mu and xbar parameters (GH-20835) 2020-06-13 15:55:52 -07:00
Raymond Hettinger
0400a7f2f8
Minor code cleanups for statistics (GH-19873) 
* Minor cleanups:  Removed unused code.  Move C import near its Python version.

* Clean-up whitespace
 2020-05-02 19:30:24 -07:00
Raymond Hettinger
70f027dd22
bpo-40290: Add zscore() to statistics.NormalDist. (GH-19547) 2020-04-16 10:25:14 -07:00
Raymond Hettinger
733b9a308e
bpo-38385: Fix iterator/iterable terminology in statistics docs (GH-17111) 2019-11-11 23:35:06 -08:00
Raymond Hettinger
5eabec022b
bpo-38521: Fix error in NormalDist.__eq__() (GH-16840) 2019-10-18 14:20:35 -07:00
Raymond Hettinger
7ce4bfa8cf
Minor code and comment cleanup (GH-16315) 2019-09-20 21:46:52 -07:00
Raymond Hettinger
272d0d017a
bpo-36546: No longer a need to make "data" positional only (GH-16252) 2019-09-17 20:45:05 -07:00
Raymond Hettinger
4db25d5c39
bpo-36018: Address more reviewer feedback (GH-15733) 2019-09-08 16:57:58 -07:00
Raymond Hettinger
e4810b2a6c
bpo-36324: Apply review comments from Allen Downey (GH-15693) 2019-09-05 00:18:47 -07:00
Dong-hee Na
0a18ee4be7 bpo-37798: Add C fastpath for statistics.NormalDist.inv_cdf() (GH-15266) 2019-08-23 15:20:30 -07:00
Raymond Hettinger
8183bb8150
bpo-36324: Update comments to include the target hash sums (GH-15110) 2019-08-04 11:52:04 -07:00
Raymond Hettinger
1c0e9bb94b
Minor whitespace, indentation, and quoting changes to improve internal consistency and appease linters (GH-14888) 2019-07-21 12:13:07 -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
eed5e9a956
bpo-36546: Clean-up comments (GH-14857) 2019-07-19 01:57:22 -07:00
Raymond Hettinger
1791128677
bpo-36546: Mark first argument as position only (GH-14363) 2019-06-25 04:39:22 +02:00
Raymond Hettinger
6c01ebcc0d
bpo-37158: Simplify and speed-up statistics.fmean() (GH-13832) 2019-06-05 07:39:38 -07:00
Raymond Hettinger
cba9f84725
bpo-36546: Add design notes to aid future discussions (GH-13769) 2019-06-02 21:07:43 -07:00
Raymond Hettinger
fb8c7d5332
bpo-36018: Make "seed" into a keyword only argument (GH-12921) 2019-04-23 01:46:18 -07:00
Raymond Hettinger
7280048690
bpo-35904: Add missing fmean() entry to the summary table (GH-12919) 2019-04-23 01:35:16 -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
fe13883f01 bpo-36324: Improved code formatting for the NormalDist.inv_cdf rational approximation (GH-12448) 
https://bugs.python.org/issue36324
 2019-03-19 14:29:13 -07:00
Raymond Hettinger
52a594bd0d NormalDist.inv_cdf(): In-line constants because the variable names were not informative (GH-12446) 2019-03-19 12:48:04 -07:00
Raymond Hettinger
5f1e8b4d24 Add docstrings to the arithmetic methods in NormalDist() (GH-12426) 2019-03-18 22:24:15 -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
41f0b78cbf Simplify overlap() formula for case where variances are equal (GH-12323) 2019-03-14 02:25:26 -07:00
Raymond Hettinger
fc06a192fd
bpo-35892: Fix mode() and add multimode() (#12089) 2019-03-12 00:43:27 -07:00
Raymond Hettinger
318d537daa
bpo-36169 : Add overlap() method to statistics.NormalDist (GH-12149) 2019-03-06 22:59:40 -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
Victor Stinner
d6debb24e0 bpo-29919: Remove unused imports found by pyflakes (#137) 
Make also minor PEP8 coding style fixes on modified imports.
 2017-03-27 16:05:26 +02:00
Steven D'Aprano
fb315dbe82 Issue #27181 remove geometric_mean and defer for 3.7. 2016-10-05 03:24:45 +11:00
Raymond Hettinger
15f44ab043 Issue #27895: Spelling fixes (Contributed by Ville Skyttä). 2016-08-30 10:47:49 -07:00
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
Steven D'Aprano
e5803d9d2f Add geometric_mean to __all__ 2016-08-24 12:17:00 +10:00
Steven D'Aprano
0a21c729eb Re-licence statistics.py under the standard Python licence. 2016-08-24 02:40:03 +10:00
Steven D'Aprano
9a2be91c6b Issue27181 add geometric mean. 2016-08-09 13:58:10 +10:00