Chi Square Formula

fitChiSquare is a generalized chi-square fitting routine for any model function when data measurement errors are known; it returns the model parameters and their uncertainties at the delta chi-square = 1 boundary (68% confidence interval). It also returns the chi-square and degrees of freedom...

Statistics::ChisqIndep is a Perl module to perform chi-square test of independence (a.k.a. contingency tables). Synopsis #example for Statistics::ChisqIndep use strict; use Statistics::ChisqIndep; use POSIX; # input data in the form of the array of array references my @obs = ([15, 68,...

It will test for trends when seasonality is present and over multiple observation stations, all of which are Chi-square statistics.These tests will allow for ties, missing data, and multiple observations per time index, since it uses the enhanced ktaub.m function that was recently updated.There...


Platforms: Windows, Mac, *nix, Matlab, Solaris

FitChiTool provides an interface similar to the Curve Fitting Toolbox to the fitChiSquare function.This allows you to perform fits using chi-square when measurement errors are known on linear or nonlinear models. It allows allows you to perform fits with multiple independent (more than one x)...


Platforms: Matlab

QuickChiX is a programme for carrying out chi-square analysis


Platforms: Mac

ProbabilityCalc calculates the probability of z, t, F, and chi-square values.


Platforms: Mac

PoissonMax is a handy, small, command prompt based application specially designed to compute Poisson maximum likelihood mean frequency from limiting dilution data, with 95% confidence limits and Chi-square value.


Platforms: Windows

The Hardy Weinberg equilibrium is a fundamental law in genetic.This function was deeply rewrited.If a locus is biallelic the function use the exact Hardy Weinberg test (similar to Fisher exact test) analyzing all possible tables. If you download TERNPLOT functions (ID:2299) the function plots a...


Platforms: Matlab

Statistics::ChiSquare - How well-distributed is your data? SYNOPSIS use Statistics::Chisquare; print chisquare(@array_of_numbers); Statistics::ChiSquare is available at a CPAN site near you. Suppose you flip a coin 100 times, and it turns up heads 70 times. Is the coin fair? Suppose...


Platforms: *nix

Math::CDF is a Perl module to generate probabilities and quantiles from several statistical probability functions. SYNOPSIS use Math::CDF; $prob = &Math::CDF::pnorm(1.96); if( not defined($z = &Math::CDF::qnorm(0.975)) ) { die "qnorm() failed"; } or use Math::CDF qw(:all); $prob =...


Platforms: *nix

gjrand is a programmer's library for pseudo-random numbers. gjrand library includes random number generator testing code and is intended for simulation, games, and "Monte-Carlo" algorithms. It produces pseudo-random numbers of the types: uniform integers, uniform reals, normally distributed...


Platforms: Mac

Statistics::Distributions is a Perl module for calculating critical values and upper probabilities of common statistical distributions. SYNOPSIS use Statistics::Distributions; $chis=Statistics::Distributions::chisqrdistr (2,.05); print "Chi-squared-crit (2 degrees of freedom, 95th...


Platforms: *nix

Calculates three indices of factorial invariance: the coefficient of congruence, a chi-square goodness of fit test, and Cattell's Salient Variable Similarity Index.


Platforms: Mac

Command language audit software - used for audits: * audit identification of duplicates, gaps, audit for outliers, population summaries, data classification and stratification, univariate statistics, audit sample size computations, percentiles/quartiles, Federal holiday dates, histograms and...


Platforms: Windows

A Java package that provides routines for various statistical distributions. Based on R version 2.14.1. The major difference is that JDistlib is thread safe. The library contains the density (pdf), cumulative (cdf), quantile, and random number generator (RNG) routines of the following...


Platforms: Windows, Mac, Linux

Bogofilter is a mail filter that classifies mail as spam or ham (non-spam) by a statistical analysis of the message's header and content (body). The program is able to learn from the user's classifications and corrections. Bogofilter is or can be integrated with graphical mailers, such as KDE's...


Platforms: *nix, C/C++, BSD Solaris

Fast Algorithm estimating the number of sinusoids in a white Gaussian noise. This algorithm use a sub-space method based on chi-square statistics of eigen values of the Autocorrelation Matrix.Example :clear, close all hiddenN = 512;L_vrai = 4;fe = 2000;F = (0:(fe/2)/(N/2-1):(fe/2));snr = [-10 -10...


Platforms: Matlab

Text::NSP::Measures::2D::CHI::phi is a Perl module that implements Phi coefficient measure for bigrams. SYNOPSIS Basic Usage use Text::NSP::Measures::2D::CHI::phi; my $npp = 60; my $n1p = 20; my $np1 = 20; my $n11 = 10; $phi_value = calculateStatistic( n11=>$n11, n1p=>$n1p, np1=>$np1,...


Platforms: *nix

Text::NSP::Measures::2D::CHI::tscore is a Perl module that implements T-score measure of association for bigrams. SYNOPSIS Basic Usage use Text::NSP::Measures::2D::CHI::tscore; my $npp = 60; my $n1p = 20; my $np1 = 20; my $n11 = 10; $tscore_value = calculateStatistic( n11=>$n11,...


Platforms: *nix

Text::NSP::Measures::2D::CHI::x2 is a Perl module that implements Pearsons chi squared measure of association for bigrams. SYNOPSIS Basic Usage use Text::NSP::Measures::2D::CHI::x2; my $npp = 60; my $n1p = 20; my $np1 = 20; my $n11 = 10; $x2_value = calculateStatistic( n11=>$n11,...


Platforms: *nix