Chi Squared Calculations

It is well known that many multivariate statistical procedures call upon the assumption of multivariate normality (MVN). At least 50 different procedures have been proposed for this problem. Unfortunately, different conclusions about the MVN of a data set can be reached by different procedures...

The D'Agostino-Pearson's K2 test is used to assessing normality of data using skewness and kurtosis. It approximates to the chi-squared distribution.File needs to input the data vector and significance level (default = 0.05).It outputs whether or not the normality is met.

Canonical discriminant analysis is a dimension-reduction technique related to principal component analysis and canonical correlation called canonical discriminant analysis. It derives the canonical coefficients parallels that of one-way MANOVA and it finds linear combinations of the quantitative...


Platforms: Matlab

This file performs the Stuart-Maxwell's test for all the marginal homogeneity (i.e. across all the categories simultaneously) for each of the two sample times (nominal samples). Obviously, it need a square KxK table.It is a non-parametric statistical test. The test was proposed by Stuart (1955),...


Platforms: Matlab

There are several tests for homogeneity of variances. Fligner and Killeen (1976) suggest ranking (i) the |x_ij - mean| as normal type scores (a) by (0.5 + i/2(N+1)). Where i is the group and j the observation. The replacement of the mean by the median, a modification, is an attempt to improve the...


Platforms: Matlab

The homogeneity of variances test is a useful tool in many scientific applications. Boos and Brownie (2004) and Conover et al. (1981) give a broad review.Here, we developed an m-file as an alternative to the homogeinity of variances test considering the modification of the Bartlett's test...


Platforms: Matlab

In order to run this m-file it is necessary to download the fractrimmeanfile you can find in the URL address:http://www.mathworks.com/matlabcentral/fil...53-fractrimmeanThe bootstrap is a way of estimating the variability of a statistic from a single data set by resampling it independently and...


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

The Levenberg-Marquardt Fitting of Nuclear Decay Model demonstrates how EJS can be used to fit experimental data. In this simulation, nuclear decay data are used to provide a simple example, but this same process can be applied to any type of data. The sum of squared deviations is minimized but...


Platforms: Mac

Electrical Calculations software provides calculations for busbar and cable ratings, static and bulk power factor correction, motor starting currents and curves, enclosure ventiation and many metric / imperial conversions and constants. Written for Electrical Engineers and tradesmen.


Platforms: Windows

Clearlooks2-Squared-Berries is a variation of the Clearlooks2-Squared theme. This is my variation of Clearlooks2-Squared. Ive been using this for many months, and like it quite a bit. Ive finally decided to release it, because I saw somebody releasing a theme with a red close-button. Apparently...


Platforms: *nix

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

Chi and Tai are cute little dogs that love to rest, play and pose for the camera.


Platforms: Mac

Maximum Calculations is a suite of useful Windows utilities. The package truly runs the gamut, covering everything from digital media to the Windows Registry. The best all-in-one utility for Windows continues to grow. Among them, you'll find an Audio Encoder, Audio Recorder, CD Ripper, CD Writer,...


Platforms: Windows

Remove infections of Trojans, Spyware, Adware, Worms, Keyloggers, Rootkits, Dialers and other malicious programs. 4 million users world wide rely on a-squared to clean their PC from Malware. Remarkable easy to use and completely free or charge. Scans your computer for malicious software...


Platforms: Windows

a-squared HiJackFree is a detailed system analysis tool which helps advanced users to detect and remove all types of HiJackers, Spyware, Adware, Trojans and Worms. Manage all types of Autoruns on your system, Explorer and Browser plugins (BHOs, Toolbars, etc.) running Processes and their...


Platforms: Windows

a-squared Anti-Malware protects your PC from Malware-based hacker attacks. Its special capabilities in dealing with Trojans, Worms, Dialers, Adware and Spyware make it an indispensable enhancement to any protection system, whether on a private PC or a company network. The unique Malware-IDS...


Platforms: Windows

a-squared HiJackFree is a detailed system analysis tool which helps advanced users to detect and remove all types of HiJackers, Spyware, Adware, Trojans and Worms. Manage all types of Autoruns on your system, Explorer and Browser plugins (BHOs, Toolbars, etc.). running Processes and their...


Platforms: Windows

Tai Chi 3D is software that helps you learn Tai Chi. It describes each move of the Beijing 24 Step Simplified Taijiquan. The entire form is presented in two ways. Firstly, as a set of helpful notes that you can access just like a web site with the built-in web browser. And secondly as a series of...


Platforms: Windows