::Free Statistics and Forecasting Software::

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:: Free Statistics Software (Calculator) - Web-enabled scientific services & applications ::

All rights reserved. The non-commercial (academic) use of this software is free of charge. The only thing that is asked in return is to cite this software when results are used in publications.



Wessa.net offers these software applications free of charge:

Descriptive Statistics SoftwareThis collection of Free Statistics Calculators offers a wide range of descriptive and explorative types of statistical measures and analysis: Central Tendency, Average, Mean, Median, Variability, Interquartile Range, Concentration, Lorenz Curve, Gini Coefficient, Skewness, Kurtosis, Quartiles, Percentiles, Notched Boxplot, Histogram, Correlation, Partial Correlation, Rank Correlation (Spearman and Kendall), Simple Regression, Kernel Density Estimation, Harrell-Davis Quantiles, Bivariate KDE, Correlation Matrix, Stem-and-leaf plot, Explorative Data Analysis
 
Regression SoftwareThis is a collection of Regression-based types of analysis for single and multiple equations: Multiple Regression Equations, Bias-Reduced Logistic Regression (Firth method), Recursive Partitioning (Classification & Regression Trees), Variance-based Structural Equation Modeling (Partial Least Squares - Path Modeling).
 
Statistical DistributionsFeatures Random Number Generators, PPCC Plots (incl. Tukey lambda), and Statistical Distribution Fitting Modules (Maximum Likelihood) for a series of important distributions: Beta, Inverted Beta, Cauchy 1, Cauchy (2 parameters), Chi, Chi Square (1 parameter), Chi Square (2 parameters), Erlang, Exponential, Fisher F, Gamma, Inverted Gamma, Gumbel, Laplace, Logistic, Lognormal, Normal, Pareto, Power, Rayleigh, r-Distribution, Rectangular (Uniform), Student t, Triangular, and Weibull.
 
Statistical Hypothesis Testing SoftwareOffers statistical testing of a variety of hypotheses: Population Mean, Mean (critical value, p-value, type II error, sample size), Skewness/Kurtosis, Quasi Random-Walk
 
Time Series Analysis (R modules)Performs Univariate Box-Jenkins ARIMA modeling, forecasting, and residual model checking. In future this module will replace the old versions based on C code.
 
Statistics Education at Simon Fraser University

This section contains various types of Statistics Software for Statistics Education that have been created by Larry Weldon at Simon Fraser University, Vancouver, Canada.
 
Statistics Education at Aston University

This section contains various types of Statistics Software for Statistics Education that have been created by Ian Holliday at Aston University, Birmingham, UK.
 
Mathematical Equation PlotterPlots mathematical equations, statistical distributions, derived functions, cumulative functions, and apply numerical integration. Equations can be formulated in algebraic form, for instance: y=exp(a*sin(x)+b). The equation is sent through an interpreter and the analysis and equation chart is generated (in .png format).
 
Time Series DatabaseUse this Database to gain access to thousands of time series about financial markets. Note: this application is also available from within our Scientific Forecasting Software.
 
R modulesAnyone can create, maintain, and publish R-based modules (subject to editorial acceptance) and make them freely available within the Wessa.net framework.
 

Multiple Regression Software (C module)Performs Multiple Regression Equation Modeling with the following features: Ordinary Least Squares Estimation, Heteroskedasticity tests, Autocorrelation tests, Misspecification tests, Multicollinearity tests, Regression Charts, ANOVA tables, Goodness of Fit, and much more.
Several types of regression will be available in future.

 
Scientific Forecasting Software (C modules)

Performs Univariate Box-Jenkins ARIMA modeling, forecasting, and various bootstrap simulation methods for the estimation of financial profit density functions according to the following strategies: Buy&Hold, Alexander's Filterrule, truncated Koyck lag-based MACD. Various types of time series analysis tools are available: (Partial) Auto Correlation Function, Spectral Analysis, Variance Reduction Matrix, Standard Deviation-Mean Plot, trimmed Skewness & Kurtosis, suspended rootogram displays, percentiles, concentration, histograms, foreward & backward running autocorrelation, ARMA parameter estimation, and much more.
 

Sample Size Software(sample size, sample accuracy, confidence interval)
 
Factor Analysis(Factor Analysis, Principal Components)
 
Clustering Software(Agglomerative Nesting, Hierarchical Clustering)
 
Reproducible ExamplesThis module provides access to interesting examples that have been published in articles or textbooks together with all the data and statistical software that is needed to reproduce them. All software is readily available online, and the source code of the underlying analysis can be viewed after successful completion.
 
Financial Calculators(currency decimal, currency fraction, present value, future value, Black-Scholes option prices, interest payment, principal payment, number of periods, effective interest, nominal interest, Quasi Random-Walk identification, trading performance statistics, etc...)
 

NEWS FEED from BBC News : Science and Nature
Obama to unveil clean energy planUS President Barack Obama is set to unveil what he calls "the biggest, most important step we have ever taken" in tackling climate change.
Empire State hosts wildlife displayImages of endangered animals are flashed across the Empire State Building in New York to highlight the issue of potential mass extinction.
Poll to find UK's favourite insectAn online poll is launched by the Royal Society of Biology to find the UK's favourite insect.
Zimbabwe seeks second 'lion killer'Zimbabwe says it is seeking a second American over the illegal killing of a lion, as the outcry over the death of famed animal Cecil continues.
Earth magnetic shield is much olderResearchers have revealed that the Earth's magnetic field is 550 million years older than previously believed.
Big year ahead for James Webb telescopeIt's been a long time coming, but Nasa is now at the business end of building its giant successor to the Hubble Space Telescope.
AA joins protest at green changesThe AA joins green groups in warning that recent changes in energy policy will harm the climate.
Wales surf wave generator starts upThe first waves have peeled across an artificial surf lagoon built on the site of an old aluminium works on the edge of the Snowdonia National Park.
Comet yields 'rich array' of organicsThe spacecraft which made a spectacular landing on a comet last year has discovered a rich array of carbon compounds.
Robot can leap from water's surfaceScientists in South Korea develop a tiny robot - based on the water strider insect - that can jump on water
Aquariums 'deliver health benefits'People who spend time watching fish swim in aquarium tanks could improve their physical and mental wellbeing, a study shows.
Aurora found beyond our Solar SystemAn aurora has been spotted around a brown dwarf more than 18 light years away, scientists report.
Gunman injured by armadillo ricochetA man in East Texas is wounded after a bullet he fired at an armadillo ricocheted and hit him, the local sheriff says.
How ant armies move massive mealsIn a new study, physicists reveal how ants co-operate to carry huge chunks of food back to their nests.
Alarm over Cambodia 'timber grab'A new report says that highly valuable forests are being lost at an "unprecedented" rate from protected lands in Cambodia.
Bendy tech promise for grapheneScientists apply the paper art of kirigami to slice graphene, the world's thinnest material.
Olive tree blight spreads to CorsicaThe virulent Xylella disease ravaging olive trees in Italy spreads to Corsica, prompting emergency measures.
VIDEO: 'Blue moon' as seen around the worldThere has been a rare opportunity to witness a unique lunar event in the night sky; a so-called "blue moon".
VIDEO: New science for James Webb TelescopeMark Clampin from Nasa explains how the James Webb Space Telescope will help us to see even deeper into the Universe.
VIDEO: The robot that jumps on waterScientists in South Korea develop a tiny robot - based on the water strider insect - that can jump on water.
VIDEO: Chimps eating clay 'as supplement'A community of chimpanzees in Uganda is increasingly eating clay to boost their mineral intake, research suggests.
VIDEO: Virgin Galactic crash: Brakes blamedInvestigators have said a Virgin Galactic spaceship crash was caused by structural failure after the co-pilot unlocked a braking system early.
VIDEO: Chasing Britain's most threatened duckWhy conservationists in the Scottish Highlands are chasing the UK's most threatened breeding duck.
VIDEO: Scientists fear robotic weaponsMore than 1,000 scientists, including Stephen Hawking, have called for a ban on developing artificial intelligence for military use and to build robotic weapons.
VIDEO: The bag designed to thwart terroristsScientists have developed what they're describing as a bomb proof material that could be a major step forward in aircraft security.
In pictures: Ecology photo prizeSpectacular image competition winners
Great robotic missions to explore spacePast space missions that have changed our understanding
Why we like to believe that dinosaurs were scalyWhy do we like to believe that dinosaurs were scaly?
Bloodhound Diary: A riveting 'tail'Project approaches the end of the mechanical build
Iberian lynx returns to Spain from verge of extinctionHard work saves Spanish lynx from extinction
Australia's role in search for alien lifeSearching for alien life with a telescope down under





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To cite Wessa.net in publications use:
Wessa, P. (2015), Free Statistics Software, Office for Research Development and Education,
version 1.1.23-r7, URL http://www.wessa.net/

© All rights reserved. Academic license for non-commercial use only.
The free use of the scientific content, services, and applications in this website is granted for non commercial use only. In any case, the source (url) should always be clearly displayed. Under no circumstances are you allowed to reproduce, copy or redistribute the design, layout, or any content of this website (for commercial use) including any materials contained herein without the express written permission.

Information provided on this web site is provided "AS IS" without warranty of any kind, either express or implied, including, without limitation, warranties of merchantability, fitness for a particular purpose, and noninfringement. We use reasonable efforts to include accurate and timely information and periodically update the information, and software without notice. We make no warranties or representations as to the accuracy or completeness of such information (or software), and it assumes no liability or responsibility for errors or omissions in the content of this web site, or any software bugs in online applications. Your use of this web site is AT YOUR OWN RISK. Under no circumstances and under no legal theory shall we be liable to you or any other person for any direct, indirect, special, incidental, exemplary, or consequential damages arising from your access to, or use of, this web site.

Software Version : 1.1.23-r7
Algorithms & Software : Patrick Wessa, PhD
Server : www.wessa.net

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