::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
Risk from extreme weather risesRoyal Society says combination of population growth and climate change will increase danger to cities.
UK team's data bonanza from cometUK researchers obtain "rich" data from the Philae lander just before its power died.
Climate fixes 'could harm billions'Schemes to tackle climate change could prove disastrous for billions of people, but might be required for the good of the planet, scientists say.
Watson to sell Nobel Prize for DNAJames Watson is to sell the Nobel Prize medal he won for the discovery of the structure of DNA.
Gravity map traces ocean circulationScientists use gravity data to produce what they say is the most accurate space view yet of global ocean currents and the speed at which they move.
Stone age axe found with wood handleArchaeologists in Denmark have uncovered an incredibly rare find: a stone age axe held within its wooden handle.
Urban farming helps feed the worldUrban agriculture plays a much more extensive role in global food security than previously estimated, a study using satellite data suggests.
Brain's dementia weak spot foundThe brain has a weak spot for Alzheimer's disease and schizophrenia, according to experts who have pinpointed the region using scans.
Dark sky status bid for South DownsA campaign begins to reduce light pollution in South Downs National Park and give it dark skies special status.
Polar sub gauges sea ice thicknessA novel autonomous sub acquires the first detailed, high-resolution 3D maps of Antarctic sea ice.
Peru probes 500 sea lion deathsPeru's environmental police launch an investigation into the deaths of some 500 sea lions found on a northern beach.
Embrace the arts, engineers toldEngineering needs to emphasise its creative side to encourage more young people to take it up as a career, says a leading member of the profession.
Fish and chips 'harming' eider ducksEider ducks on Northumberland's coastal areas are being harmed by people feeding them fish and chips and bread, a wildlife expert warns.
Climate fund receives $9.3bn pledgeThirty nations meeting in Berlin have pledged $9.3bn (£6bn) for a fund to help developing countries cut emissions and prepare for climate change.
Geckos inspire 'Spider-Man' glovesThe way geckos climb has inspired a device that allowed a 70kg man to scale a glass wall like Spider-Man.
Polynesia's billion dollar claimOverseas territory demands compensation for atom bomb tests.
Shakespeare Folio found in FranceA rare Shakespeare First Folio, regarded as the most important book in English literature, is discovered in a small French town.
Museum fossils are new dino speciesA new species of horned dinosaur is identified from fossils held in a Canadian museum for 75 years.
UK 'to lead moon landing in 10 years'A British-led consortium outlines its plans to land a robotic probe, paid for by public donations, on the Moon in 10 years' time.
Organic molecules detected on cometThe Philae lander has detected organic molecules on the surface of its comet, scientists have confirmed.
Europe signs on to Orion ventureThe European Space Agency and Airbus sign a contract that will see the aerospace giant build the "back end" of America's new manned spaceship.
World's biggest crane ship sets sailThe world's largest crane ship, which is capable of lifting oil rigs, sets sail from its shipyard in Korea for Rotterdam port in the Netherlands.
Camera sees Philae's hairy landingHigh-resolution pictures have now been released of the Philae probe around the time of landing on Comet 67P last Wednesday.
Brian Cox creates pioneering 3D showTV physicist Brian Cox and the visual effects team behind Gravity are to create a new 3D live show using a cutting-edge augmented reality system.
Court puts more heat on dieselsUK government comes under renewed pressure to cut pollution from diesel vehicles following the latest ruling in a battle over clean air.
Planning law change 'catastrophic'Proposed changes to planning policy would be "catastrophic" for rural areas, rural housing and planning authorities warn.
Sun boosts UK lightning strikesThe number of lightning strikes across the UK has been significantly affected by solar activity, according to new research.
Wildlife crime wanted list releasedThe public are being asked to provide information on the locations of nine fugitives suspected of serious environmental crimes.
Culling to begin at bird flu farmA cull of 6,000 ducks is due to start following a confirmed case of bird flu at a breeding farm in East Yorkshire.
Rabies risk from puppy smugglingAn increasing number of dogs are being transported to the UK from eastern Europe, risking an outbreak of rabies, a charity is warning.
Threatened birds of prey 'vanish'Two of the rarest birds of prey in England, which had been satellite tagged, vanish in unexplained circumstances.
Hyenas feast at vulture restaurants"Restaurants" of dead meat set up for endangered vultures also attract an undesirable clientele of hyenas and jackals, according to a six-year study.
Brazil releases 'good' mosquitoesBrazilian researchers release thousands of mosquitoes infected with a bacteria that suppresses dengue fever into the environment in Rio de Janeiro.
VIDEO: Extreme weather and its risk to livesClimate change and population growth will hugely increase the risk to people from extreme weather, a report says.
AUDIO: Horned dinosaur species identifiedA new species of horned dinosaur has been identified from fossils held in a Canadian museum for 75 years.
VIDEO: How to hack a molecular microscopeA PhD student from Brunel University London has saved himself £100,000 by 'hacking' his own kit.
AUDIO: Songwriters' bad science lyricsBlue Peter Scientist Steve Mould is given the task of looking at some of the worst offenders.
VIDEO: First Italian woman arrives at ISSItaly's first female astronaut has arrived at the International Space Station.
VIDEO: 'King of Fish' returns to UK riversSuccessful conservation projects have reversed the decline of salmon in many UK rivers, as John Maguire reports.
VIDEO: Volcano erupts on Cape Verde islandA volcano has erupted on the Cape Verde island of Fogo, resulting in the evacuation of hundreds of residents and the closure of a local airport.
VIDEO: Fines plan over Japanese KnotweedFailing to control the spread of Japanese Knotweed could result in an anti-social behaviour order and a fine of up to £2500.
Somerset flood spend 'driven by politics', say expertsWas campaign to guard Somerset Levels driven by politics or science?
Tracing the Ebola outbreakTracking first Ebola victim and and how virus spread
The problem with freezing stem cellsWhat went wrong with stem cell cancer treatment
VIDEO: 15 secs: Female astronaut pioneerTasks for Italy's first female astronaut
VIDEO: HIV now and then: 1982 vs 2014How 30 years has changed living with the virus
Paul Rincon: Where next for Philae mission?What are the next steps in comet landing mission?
Space agency plans Mars rover from Lego bricksSpace agency plans Mars mission with plastic bricks
The self-publicist whose medical text books caused a stirA strangely accurate book of anatomy from 1543
Is it OK to leave objects on the Moon?Is it OK to leave objects on the Moon?
'Skunk power' fires fusion confusionCan nuclear fusion become a reality within 10 years?
Is comet landing mission worth the cost?Can Rosetta mission price tag be justified?

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To cite Wessa.net in publications use:
Wessa, P. (2014), Free Statistics Software, Office for Research Development and Education,
version 1.1.23-r7, URL http://www.wessa.net/

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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
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