Chi Square Tool

In statistics, the Kruskald-deOCtWallis one-way analysis of variance by ranks (named after William Kruskal and W. Allen Wallis) is a non-parametric method for testing equality of population medians among groups. It is identical to a one-way analysis of variance with the data replaced by their...

Statistic fundamentals of he Correspondence Analysis (CA) is presented in the CORRAN m-file you can find in this FEX author''s page. CA can be extended, a this m-file makes, to more than two categorical variables, called Multiple Correspondence Analysis (MCA).Karl Pearson (1913) developed the...

Other hypothesis used with the Mauchly's sphericity test is on the orthonormalized contrasts,H0: Cd-deOaoSC = s^2I , where C is any full-rank (p-1) x p matrix of orthonormal contrasts.A is the nonorthonormalized contrasts matrix.C = GMO(Ad-deOao) is a (p-1) doOCo p column-orthonormal matrix (by...


Platforms: Matlab

Doornik-Hansen (1994) introduce a multivariate version of the univariate omnibus test for normality of Shenton and Bowman (1977), based on the transformed skewness and kurtosis. Due that the skewness and kurtosis are not independently distributed and the kurtosis approaches very slowly to...


Platforms: Matlab

Calculates the Mardia's multivariate skewness and kurtosis coefficients as well as their corresponding statistical tests. For large sample size the multivariate skewness is asymptotically distributed as a Chi-square random variable; here it is corrected for small sample size. Likewise, the...


Platforms: Matlab

A statistical analysis used for count data is to compare the proportions of a binary outcome of interest for two or more groups.This m-file it is an implemented alternative to the Marascuillo's test and identifies significant pairwise contrasts that this last one does not. If the previously...


Platforms: Matlab

Grubb's outlier test can be used to remove one outlier (see deleteoutliers.m by Brett Schoelson). If you decide to remove this outlier, you might be tempted to run Grubbs' test again to see if there is a second outlier in your data. However, if you do this, you cannot use the same rejection...


Platforms: Matlab

On the literature there are available several tests of the multivariate normality (ca. 50). Among them is the graphic approach based on a chi-square quantile-quantile plot of the observations' squared Mahalanobis distances. Besides the graphic q-q approaching, in this file we proposes an...


Platforms: Matlab

From the covariance matrices (without data), groups size vector and a significance level (default = 0.05), the homogeneity covariance matrices are testing by the Box's M, it gives a Chi-square or F approximation in function of the groups sample-size.Outputs are the Box's M statistic,...


Platforms: Matlab

This m-file performs the Cochran's Q test for multi-way tables which each variable has two levels, that is, for 2x2...x2 tables. It is used to test the homogeneity of the one-dimensional margins. So, Cochran's Q test is a nonparametric test examining change in a dichotomous variable across more...


Platforms: Matlab

This m-file performs the Bowker's test for symmetry. It is an extension of the McNemar test to a KxK situation. There are now K response categories for the two dependent samples.The null hypothesis is that the probabilities in the square table satisfy symmetry or that there is no sifnificant...


Platforms: Matlab

Computes the interrelationships between two sets of variables made on the same objects without data. The canonical correlation is the maximum correlation between linear functions of the two vector variables. Linearity is important because the analysis is performed on the correlation matrix which...


Platforms: Matlab

From a total multivariate data matrix and a significance level, the homogeneity covariance matrices are testing by the Box's M, given a Chi-square or F approximation in function of the group sample-size.


Platforms: Matlab

Correspondence Analysis (CA) is a special case of Canonical Correlation Analysis (CCA), where one set of entries (categories rather than variables) is related to another set. Also, it can be seen as a special case of Principal Component Analysis (PCA), where it is used for tables consisting of...


Platforms: Matlab

This file performs the Fisher exact probability test for a table of frequency data cross-classified according to two categorical variables, each of which has two levels or subcategories (2x2). It is a non-parametric statistical test used to determine if there are nonrandom associations between...


Platforms: Matlab

Freeware unit converter and price calculator software is very powerful tool that contains important features which are helpful for realtor needed for rapidly and easily conversion from one unit to another of area and length. Software is also helpful for realtors for smartly deal the business for...


Platforms: Windows

Sudoku Tool is a sudoku game that helps you to solve sudoku puzzles. Sudoku Tool can generate puzzles randomly or puzzles can be entered manually. Some of the features include random puzzle generation, pencil marks, and the ability to save games. Manual Setup: The game starts in...


Platforms: *nix

Webserver Stress Tool simulates large numbers of users accessing a website via HTTP/HTTPS. The software can simulate up to 10,000 users that independently click their way through a set of URLs. Simple URL patterns are supported, as well as complex URL patterns, via a Script file. Based on the...


Platforms: Windows

This tool maps the movement of the first joystick onto thecursor keys (up,down,left,right). Additionally, it also mapsthe first joystick button to the return/enter key, the secondjoystick button to the tab key and the third button (if yourjoystick has one) to the escape key.Great for scrolling...

Coocool is a shareware program that allows web developers the ability to easily add advanced java script and DHTML code to their web pages. Coocool also allows web developers to easily add java applets to their web pages. Coocool Stupid Web Tricks Tool Features include: Preview effect clip...


Platforms: Windows