NAME

       Statistics::Lite - Small stats stuff.

SYNOPSIS

               use Statistics::Lite qw(:all);

               $min= min @data;
               $mean= mean @data;

               %data= statshash @data;
               print "sum= $data{sum} stddev= $data{stddev}\n";

               print statsinfo(@data);

DESCRIPTION

       This module is a lightweight, functional alternative to larger, more complete, object-oriented statistics
       packages.  As such, it is likely to be better suited, in general, to smaller data sets.

       This is also a module for dilettantes.

       When you just want something to give some very basic, high-school-level statistical values, without
       having to set up and populate an object first, this module may be useful.

   NOTE
       This module implements standard deviation and variance calculated by both the unbiased and biased
       estimators.

FUNCTIONS

       "min(@data)", "max(@data)", "range(@data)", "sum(@data)", "count(@data)"
           Returns  the  minimum  value,  maximum  value,  range  (max - min), sum, or count of values in @data.
           Undefined values are ignored.

           "count(@data)" simply returns "scalar(@data)".

           Please note that this module does not ignore undefined  values  in  your  data;  instead,  those  are
           treated as zero.

       "mean(@data)", "median(@data)", "mode(@data)"
           Calculates  the  mean,  median, or mode average of the values in @data. Undefined values are ignored.
           (In the event of ties in the mode average, their mean is returned.)

       "variance(@data)", "stddev(@data)"
           Returns the standard deviation or variance of @data for a sample (same as Excel's  STDEV).   This  is
           also called the Unbiased Sample Variance and involves dividing the sample's squared deviations by N-1
           (the sample count minus 1).  The standard deviation is just the square root of the variance.

       "variancep(@data)", "stddevp(@data)"
           Returns  the  standard  deviation  or  variance of @data for the population (same as Excel's STDEVP).
           This involves dividing the squared deviations of the population by  N  (the  population  size).   The
           standard deviation is just the square root of the variance.

       "statshash(@data)"
           Returns  a  hash  whose  keys are the names of all the functions listed above, with the corresponding
           values, calculated for the data set.

       "statsinfo(@data)"
           Returns a string describing the data set, using the values detailed above.

       "frequencies(@data)"
           Returns a hash. The keys are the distinct values in the data set, and the values are  the  number  of
           times that value occurred in the data set.

   Import Tags
       The  ":all"  import tag imports all exportable functions from this module into the current namespace (use
       with caution). More specifically, these functions  are  the  following:  "min",  "max",  "range",  "sum",
       "count",   "mean",   "median",   "mode",   "variance",  "stddev",  "variancep",  "stddevp",  "statshash",
       "statsinfo", and "frequencies".

       To import the statistical functions, use the import  tag  ":funcs".   This  imports  all  of  the  above-
       mentioned functions, except for "statshash", "statsinfo", and "frequencies".

       Use ":stats" to import "statshash(@data)" and "statsinfo(@data)".

REPOSITORY

       <https://github.com/brianary/Statistics-Lite>

AUTHOR

       Brian    Lalonde    <brian@webcoder.info>,    "stddev(@data)",    "stddevp(@data)",    "variance(@data)",
       "variancep(@data)", additional motivation by Nathan Haigh, with kind support from Alexander Zangerl.

       The project lives at https://github.com/brianary/Statistics-Lite

COPYRIGHT AND LICENSE

       Copyright 2000 Brian Lalonde <brian@webcoder.info>, Nathan Haigh, Alexander Zangerl, and Ton Voon.

       This library is free software; you can redistribute it and/or modify it under  the  same  terms  as  Perl
       itself.

SEE ALSO

       perl(1).

perl v5.32.0                                       2021-01-07                                          Lite(3pm)