You can edit this page using wiki syntax for markup.

Article contents:[[tags: egg]] == micro-stats [[toc:]] This egg provides simple statistical operations. Very simple. == Documentation === Types ==== sequence ==== binary-predicate ==== statistics-alist <type>sequence : (or string vector list ...)</type> <type>binary-predicate : ('a 'a --> boolean)</type> <type>statistics-alist : (list-of (pair symbol *))</type> '''Note''' a {{sequence}} as understood by the {{sequences}} egg. === Usage <enscript language=scheme> (import micro-stats) </enscript> === generate-statistics <procedure>(generate-statistics SEQ [SET-ID]) -> statistics-alist</procedure> ; {{SEQ}} : {{(sequence-of real)}} ; SEQ of all iterations, in microseconds ; {{SET-ID}} : {{symbol}} ; {{'normal}} Returns an {{alist}} with the following: ; {{size}} : the count of the {{SEQ}} ; {{min}} : the minimum of the {{SEQ}} ; {{max}} : the maximum of the {{SEQ}} ; {{mean}} : arithmetic-mean alias ; {{arithmetic-mean}} : the arithmetic average of the {{SEQ}} ; {{sd}} : standard-deviation alias ; {{sigma}} : standard-deviation alias ; {{standard-deviation}} : the standard deviation for the {{SEQ}} When {{verbose}} adds the following: ; {{95th}} : the 95th percentile of the {{SEQ}} ; {{harmonic-mean}} : the harmonic average of the {{SEQ}} ; {{geometric-mean}} : the geometric average of the {{SEQ}} ; {{median}} : the median of the {{SEQ}} ; {{mode}} : the mode of the {{SEQ}} ; {{var}} : variance alias ; {{sigma^2}} : variance alias ; {{variance}} : the variance for the {{SEQ}} === basic-statistics <procedure>(basic-statistics SEQ) -> (vector-of real)</procedure> Returns #(m h g s v) for the {{SEQ}}. ; {{SEQ}} : {{(sequence-of real)}} ; the sample === generate-statistics-alist <procedure>(generate-statistics-alist SEQ FUNCS [BASICS]) -> statistics-alist</procedure> Returns an {{alist}} for a set of statistical functions results. ; {{SEQ}} : {{(sequence-of real)}} ; the sample ; {{FUNCS}} : {{(list-of function-spec)}}; the report template ; {{BASICS}} : {{#(m h g s v)}} ; required statistics A {{function-spec}} is: ; {{size}} : sample count ; {{min}} : sample minimum ; {{max}} : sample maximum ; {{arithmetic-mean}} : sample arithmetic-average ; {{standard-deviation}} : sample standard-deviation ; {{percentile}} : sample {{P}}th-percentile ; default is {{95}} ; {{harmonic-mean}} : sample harmonic-average ; {{geometric-mean}} : sample geometric-average ; {{median}} : sample median ; {{mode}} : sample mode ; {{variance}} : sample variance ; {{(KEY . (F [PARAM ...]))}} : sample parameterized {{(: F function-spec)}} === percentile <procedure>(percentile SEQ [P]) -> real</procedure> Returns {{P}}th percentile of {{SEQ}}. ; {{SEQ}} : {{(sequence-of real)}} ; {{P}} : {{[0 .. 100]}} ; defaults is {{95}} === arithmetic-mean <procedure>(arithmeticmean SEQ) -> real</procedure> Returns the ''arithmetic'' mean for {{SEQ}}. ; {{SEQ}} : {{(sequence-of real)}} === mean <procedure>(mean SEQ) -> real real real</procedure> Returns the ''arithmetic'', ''harmonic'', & ''geometric'' means for {{SEQ}}. ; {{SEQ}} : {{(sequence-of real)}} === median <procedure>(median SEQ [<?]) -> real</procedure> Returns the ''median'' of the {{SEQ}}. ; {{SEQ}} : {{(sequence-of real)}} ; {{<?}} : {{binary-predicate}} ; ''less-than'' predicate, default {{<}} === mode <procedure>(mode SEQ [=?]) -> real</procedure> Returns the ''mode'' of the {{SEQ}}. ; {{SEQ}} : {{(sequence-of real)}} ; {{=?}} : {{binary-predicate}} ; ''equality'' predicate, default {{=}} === variance <procedure>(variance SEQ MEAN) -> real</procedure> Returns the ''variance'' for {{SEQ}}, given the {{MEAN}}. === standard-deviation <procedure>(standard-deviation SEQ [MEAN]) -> real real</procedure> Returns the ''standard-deviation'', & ''variance'' for {{SEQ}}, given the {{MEAN}}. Calculates the {{MEAN}} when not given. ; {{SEQ}} : {{(sequence-of real)}} ; {{MEAN}} : {{real}} == Requirements [[srfi-1]] [[sequences]] [[sequences-utils]] == Authors [[/users/david-krentzlin|David Krentzlin]] [[/users/kon-lovett|Kon Lovett]] == Repository This egg is hosted on the CHICKEN Subversion repository: [[https://anonymous@code.call-cc.org/svn/chicken-eggs/release/5/micro-stats|https://anonymous@code.call-cc.org/svn/chicken-eggs/release/5/micro-stats]] If you want to check out the source code repository of this egg and you are not familiar with Subversion, see [[/egg-svn-checkout|this page]]. == Version history ; 0.1.0 : Add {{(sequences utils)}} dependency. ; 0.0.9 : Deprecate {{unfold>alist}} as {{unfold->alist}}. ; 0.0.8 : Add coercions. Better types. More tests. ; 0.0.7 : Export {{arithmetic-mean}} & {{variance}}. ; 0.0.3 : Missing dependency. Fix {{percentile}} side-effecting. ; 0.0.2 : Fix category. ; 0.0.1 : C5 release. == License This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. A full copy of the GPL license can be found at <http://www.gnu.org/licenses/>.Description of your changes:

I would like to authenticate

Spam control

What do you get when you multiply 5 by 1?