simionx.Statistics - Statistics utility functions

SYNOPSIS

local Stat = require "simionx.Statistics"

-- Generate table of uniform Gaussian random numbers.
local t = {}
for n=1,10000 do t[#t+1] = Stat.gaussian_rand() end

-- Compute mean and standard deviation.
print("mean", Stat.array_mean(t))   --> "mean   0.011016404779235"
print("stdev", Stat.array_stdev(t)) --> "stdev  0.99160454577423"

-- Generate histogram.
local hist = Stat.make_histogram{data=t, nbins=10}
print(hist)
--[[OUTPUT:
    {npoints=10000,nbins=10,binmin=-4.382378,binmax=4.488155,\
    binsize=0.887053,centerbins=true,normalize=true}
    -3.938851,0.000451
    -3.051798,0.004171
    -2.164745,0.039682
    -1.277692,0.180823
    -0.390638,0.351839
    0.496415,0.356912
    1.383468,0.157826
    2.270521,0.030776
    3.157575,0.004622
    4.044628,0.000225
]]

DESCRIPTION

This module provides various statistical functions.

Note

See these additional sections in this topic in the offline SIMION 8.1.0 help file:

• INTERFACE

SOURCE

(c) 2007 Scientific Instrument Services, Inc. Licensed under the terms of SIMION 8. www.simion.com. D.Manura-2007.

version: 20071209