::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
New mass extinction event identifiedAn international team of researchers proposes adding an extra mass extinction to the current list of five.
Solar plane arrives in NanjingThe round-the-world, fuel-free aeroplane, Solar Impulse, arrives in Nanjing to prepare for an epic Pacific crossing.
Ceres' bright spots back in viewThe mysterious bright spots on the dwarf planet Ceres are back in view.
'Tame HIV' used to cure diseaseThe lives of six boys with a deadly genetic disease have been transformed by a pioneering treatment to correct errors in their DNA, say doctors.
Diver wins environmental awardA diver from the Isle of Arran in Scotland wins one of the world's most prestigious environmental awards.
'3D Cryosat' tracks Arctic winter iceAlthough Arctic sea ice set a record this year for its lowest ever satellite-observed winter extent - that was not the case for its volume, new data reveals.
UK monitoring French nuclear issueBritain's nuclear safety regulator says it expects lessons to be learned from problems with a French reactor that is very similar to one planned in the UK.
Demand for rubber 'threatens forests'The global demand for rubber tyres is threatening protected forests in Southeast Asia, according to a study.
Smart waders go fishing for scienceScientists are developing smartphone-connected waders that fly-fishing enthusiasts could wear to help them find their catch, but also to collect key data about water properties.
'Eternal' camera takes endless snapsA camera powered by the light it uses to take pictures has been invented by American scientists.
How octopuses coordinate their armsResearchers reveal the secret of an octopus's unique movement, revealing how the animals co-ordinate their eight, flexible arms.
Champagne from 1840 shipwreck testedBottles of champagne salvaged from a 170-year-old shipwreck have been analysed in the lab
Rosetta's comet throws out big jetEurope's Rosetta probe catches its comet quarry in the act of producing a huge jet of gas and dust.
Ramakrishnan to lead Royal SocietyNobel-winning structural biologist Venki Ramakrishnan is elected to become the next president of the Royal Society.
Tiger-tagging app to boost trackingA new iPad app is asking users to "tag" tigers in images gathered from the internet, to help researchers with counting and tracking the animals.
Europe drops asteroid sampling ideaEurope will not be mounting a sample-return mission to an asteroid, having rejected the MarcoPolo concept at the third time of asking.
Ministers challenged over CO2 cutsThe UK government’s claim that the country leads the world in cuts of carbon emissions is challenged by researchers at Leeds University.
Huge marine reserve for PitcairnThe UK government is to establish the largest marine reserve in the world around the Pitcairn Islands in the Pacific.
Mercury pollution risk to Arctic gullMercury pollution has risen nearly 50-fold in the feathers of a gull that feeds and breeds in the Arctic, say scientists.
Tidal lagoon 'negotiations open'Negotiations are opening on a £1bn tidal lagoon scheme in Swansea as the chancellor gives his Budget speech in the House of Commons.
VIDEO: Cheers as Solar Impulse lands in NanjingSolar Impulse has landed safely in Nanjing in the east of China, much to the delight of its mission control team.
VIDEO: Sumatran rhino in need of a mateThe Borneo Rhino Alliance are trying to find a suitable mate for a Sumatran rhino.
VIDEO: New glass frog has translucent skinA new species of glass frog has been found in the Talamanca mountains of Costa Rica.
VIDEO: Sperm whale filmed 'doing laps'A sperm whale surprises scientists carrying our research in the Gulf of Mexico as it circulates their equipment.
VIDEO: Dead fish problem in Rio rowing lakeTonnes of dead fish are being removed from a lake in the centre of Rio de Janeiro in Brazil, which is due to host rowing and canoeing events at the 2016 Olympic Games.
VIDEO: Russian polar bears debut in Sao PauloTwo Russian polar bears make their debut at Sao Paulo's Aquarium, as the only members of their species in the country.
VIDEO: To frack or not to frack?Graham Satchell explains why fracking is such a divisive subject.
VIDEO: Are fossil fuel reserves too large?BBC News looks at the idea of "stranded assets", part of the debate on climate change and global energy policy.
Is it safe for Sherpas to go back to Everest?Is it safe for Sherpas to go back to Everest?
Turning Ethiopia's desert greenA land remembered for famine is slowly turned green
Beyond the first law of computingWill Moore's Law last another 50 years?
The 'cursed' disabled boy and the people of the seaThe disabled boy struggling to find a role with the people of the sea
How does new dark matter evidence fit together?What does the flurry of new studies say about dark matter?

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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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