Variance

This is a set of functions that allows to test the weak form market efficiency and thus the predictability of the time series returns through various tests: direct and indirect test.The direct tests are the two versions (individual and joint)of the variance ratio of Lo and MacKinlay (1988).The... Platforms: Matlab

For a spreadsheet with real valued data, this script calculates the mean, variance and standard deviation of each row, creating a new spreadsheet with the respective row statistics. Platforms: Mac

StatsEasy Starter applet allows computing of Range, Median, Arithmetic, Geometric, and Harmonic means. Mean Deviation, Standard Deviation, Variance, Coefficient of Variance, Moments and Moments ratios for ungrouped data. If you have knowledge of basic to intermediate statistics this applet should... Platforms: Any Browser + Java

This free Heart Rate Monitor software allows you to make quick, easy, and accurate measurements of your heart rate (beats per minute). Measure bpm over 5 different intervals, See the variance in your bpm, Save screenshots in .bmp-format. Easy to use, Start the program; Sit, stand, or lie down...... Platforms: Windows

UNU.RAN (Universal Non-Uniform RAndom Number generator) is a collection of algorithms for generating non-uniform pseudo-random variates as a library of C functions designed and implemented by the ARVAG (Automatic Random VAriate Generation) project group in Vienna, and released under the GNU... Platforms: Windows, *nix

Statistics::CalinskiHarabasz is a Perl extension to the cluster stopping rule proposed by Calinski and Harabasz (C&H). SYNOPSIS use Statistics::CalinskiHarabasz; &ch(InputFile, "agglo", 10); Input file is expected in the "dense" format - Sample Input file: 6 5 1 1 0 0 1 1 0 0 0 0 1 1... Platforms: *nix

Time::Skew is a Perl module that computes local clock skew with respect to a remote clock. SYNOPISI use Time::Skew # Init Convex Hull and timing data my $hull=[]; my $result={}; # Iterate data point introduction Time::Skew::convexhull($result,$datapoint,$hull); This module supports... Platforms: *nix

WWW::RaptureReady is a Perl interface to Rapture Readys Rapture Index. SYNOPSIS use WWW::RaptureReady; my $rr = WWW::RaptureReady->new; print "URL: ", $rr->url, "n", "Current Index: ", $rr->index, "n", "Index Change: ", $rr->change, "n", "Last Updated: ", $rr->updated, "n"; This module... Platforms: *nix

Statistics::Descriptive is a Perl module of basic descriptive statistical functions. SYNOPSIS use Statistics::Descriptive; $stat = Statistics::Descriptive::Full->new(); $stat->add_data(1,2,3,4); $mean = $stat->mean(); $var = $stat->variance(); $tm = $stat->trimmed_mean(.25);... Platforms: *nix

Locale::KeyedText is a Perl module that refers to user messages in programs by keys. It also describes the same-number versions of Locale::KeyedText::Message ("Message") and Locale::KeyedText::Translator ("Translator"). Note that the "Locale::KeyedText" package serves only as the name-sake... Platforms: *nix

Quake III Arena Cell Shadings goal is to add Cell Shading capabilities to the Quake III engine with Real-time performance. In order to provide such feature we have decided to use Kuwahara filter. Kuwahara filter is a noise-reduction filter that preserves edges. It uses four subquadrants to... Platforms: *nix

Libeval provides simple means of evaluating simple arithmetic expressions involving literal numeric values, variables and functions using the addition (+), subtraction (-), multiplication (*), division (/), modulo division (), exponentiation (^), sign (+-), percentag (%) and grouping (())... Platforms: *nix

Math::NumberCruncher Perl module contains a collection of useful math-related functions. SYNOPSIS It should be noted that as of v4.0, there is now an OO interface to Math::NumberCruncher. For backwards compatibility, however, the previous, functional style will always be supported. # OO... Platforms: *nix

Armagetron Advanced is another version of the simple action game modeled after the lightcycle sequence of the movie Tron. In the Armagetron game, you ride a lightcycle around the game grid. You can only make sharp turns of 90 degrees and a wall constantly builds up after you. Make your... Platforms: *nix

Statistics::Descriptive::Discrete is a Perl module to compute descriptive statistics for discrete data sets. SYNOPSIS use Statistics::Descriptive::Discrete; my $stats = new Statistics::Descriptive::Discrete; $stats->add_data(1,10,2,0,1,4,5,1,10,8,7); print "count = ",$stats->count(),"n";... Platforms: *nix

Statistics::LineFit module least squares line fit, weighted or unweighted. SYNOPSIS use Statistics::LineFit; $lineFit = Statistics::LineFit->new(); $lineFit->setData (@xValues, @yValues) or die "Invalid data"; ($intercept, $slope) = $lineFit->coefficients(); defined $intercept or die... 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

Statistics::PointEstimation is a Perl module for computing confidence intervals in parameter estimation with Students T distribution. Statistics::PointEstimation::Sufficient - Perl module for computing the confidence intervals using sufficient statistics SYNOPSIS # example for... Platforms: *nix

Statistics::TTest is a Perl module to perform T-test on 2 independent samples. Statistics::TTest::Sufficient - Perl module to perfrom T-Test on 2 indepdent samples using sufficient statistics SYNOPSIS #example for Statistics::TTest use Statistics::PointEstimation; use Statistics::TTest;... Platforms: *nix

KoalaCalc is a free multi-purpose calculator for Mac OS X. In its compacted state, it looks similar to the standard calculator that comes with Mac OS X. However, simply click the 'advanced features' box and KoalaCalc comes to life to become one of the most advanced scientific, conversion,... Platforms: Mac