::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
Counting crowds by phones and tweetsA study tests the idea that large crowds can be counted using data from mobile phone usage and Twitter.
Nepal seeks expert advice on tourismTourism operators in earthquake-hit Nepal seek guidance from international experts on which areas can be declared safe for trekking and mountaineering.
How Arctic ozone hole was avoidedThe Antarctic ozone hole would have been 40% bigger and a hole over the Arctic would have opened up if ozone-depleting chemicals had not been phased out, according to research.
Volcano erupts on Galapagos islandA volcanic eruption on one of the Galapagos Islands potentially puts Charles Darwin's evolution ecosystem at risk.
'Loud wakeup call' over rare dolphinThe smallest and rarest marine dolphin in the world could be extinct within 15 years if protection is not stepped up, according to research.
Coastal farm sold to National TrustParts of the iconic Great Orme headland in north Wales are safeguarded for the future after being bought by the National Trust.
Solar Impulse awaits 'moment of truth'In what will be its greatest challenge yet, the zero-fuel aeroplane Solar Impulse will soon try to fly non-stop from China to Hawaii - a journey of more than 8,000km across the Pacific Ocean.
IS threat to rare bird near PalmyraIslamic State's capture of Palmyra in Syria threatens the last surviving colony of the northern bald ibis in the Middle East, experts says.
'Beautiful Mind' mathematician killedRenowned mathematician John Nash, subject of the film A Beautiful Mind, dies in a New Jersey taxi crash with his wife.
Trust backs beaver reintroductionBeavers should be resident in Scotland says the National Trust as it announces its support for reintroduction projects.
Spiders strum on leaves for lovePurring spiders use leaves as microphones and speakers to transmit their purring courtship song to a female, scientists find.
Ocean's 'tiniest organisms' revealedThousands of species of the ocean's tiniest organisms are revealed in a series of studies.
DNA hints at earlier dog evolutionSwedish researchers say that dogs may have been domesticated much earlier than some studies suggest.
Ancient parasite 'frozen in time'Researchers discover the 425-million-year-old remains of a new species of parasite - still clamped to the host animal it invaded.
Antarctic in 'dramatic' ice lossSatellites have recorded a big sudden change in the behaviour of glaciers on the Antarctica Peninsula, according to a UK-based team.
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: Where does Crossrail waste earth go?The BBC's Andrew Bomford finds out where the millions of tonnes of earth go that have been excavated during the cross rail project.
VIDEO: Solar plane pilot: 'Weather risk too big'The planned flight of the sun powered plane, Solar Impulse 2, has been postponed.
VIDEO: How an ancient parasite was frozen in timeProfessor David Siveter from the University of Leicester explains how a 425 million year-old parasite was frozen in time at a site in Herefordshire.
VIDEO: Dog evolution 'earlier than thought'Dogs may have been domesticated much earlier than previously though, Swedish researchers suggest.
VIDEO: Inuit challenge to EU seal banThe Inuit people of Greenland are challenging an EU ban on seal hunting and the trade in seal meat and skins, arguing it has "crashed" the Inuits' economy.
VIDEO: New ways to grow food in spaceA project will see thousands of schoolchildren experiment on seeds that have spent six months on the International Space Station.
VIDEO: Saving North Yorkshire's Tansy beetleA breeding programme is being set up for the rare Tansy beetle, which is threatened with extinction.
VIDEO: Will your favourite beach fail new test?Dozens of British beaches and lakes are at risk of failing to meet tougher European water quality standards this summer.
The great 'Mars bake-off' beginsHow to clean a room before building a Mars rover
Should animals be given human rights?Should animals be given human rights?
Will truckers lose out to software?Is the lorry driver of the future a piece of software?
The falcon hospital of QatarThe state-of-the-art hospital for poorly birds in Qatar
Can California learn to live with drought?Can California learn to live with drought?
Saving coffee from extinctionBreeding a new plant to save coffee from extinction





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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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