::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
African solar plan to power UK homesInvestors are seeking funding from the UK government for an ambitious plan to import solar energy generated in North Africa.
Europe 'will fail to protect climate'IPCC expert says EU's plan consigns future leaders to “extraordinary and unprecedented” CO2 cuts.
Comet Siding Spring skims past MarsA recently discovered comet known as Siding Spring passes Mars, giving scientists a unique chance to study the object.
UK city planning advice for ChinaUK planning experts are to advise Chinese mayors on the benefits of building environmentally friendly cities.
Mysterious US space plane returnsAn unmanned US military plane on a secretive two-year mission in space has returned to Earth in California.
Solar farms 'blight on landscape'Environment Secretary Liz Truss says large-scale solar farms are "ugly" as she confirms plans to cut a taxpayer subsidy for the schemes.
New disease 'killing amphibians'A deadly new disease has emerged in Spain that is wiping out amphibians, scientists report.
Carnivores 'help trees shed thorns'The presence of carnivores, which control herbivore numbers, helps plants without thorny defences thrive, a study of life on the savannah reveals.
Death Star moon is 'wonky or watery'The internal structure of Saturn's moon Mimas is either irregularly shaped or awash with water, according to a new study of its tell-tale wobbling movements.
Name sought for comet landing siteThe public are being invited to name the site on a comet where a European robot will try to land on 12 November.
Smart meters open to hack attackSmart meters widely used in Spain can be hacked to cut power bills, two security researchers find.
UK science 'losing ground' to rivalsCampaigners say the UK will lose its leading position in science and engineering unless current cutbacks are reversed.
Mercury's hidden water-ice revealedA Nasa spacecraft has provided the first optical images of ice within permanently shadowed craters on the planet Mercury.
Plants 'absorb more CO2 than thought'Global climate models under play the amount of CO2 being absorbed by plants, according to new research.
Sex emerged in ancient Scottish lakeThe first animals to copulate were small fish that lived 385 million years ago in what is now Scotland, a study suggests.
Giant kangaroo 'walked on two feet'A family of extinct kangaroos, three times bigger than living species, probably walked rather than hopped, according to a detailed study of their bones.
Ancient mosaic found at Greece tombArchaeologists in Greece uncover a large floor mosaic at a huge burial site at Amphipolis dating to the time of Alexander the Great.
New form of space weather identifiedA new form of solar cloud is identified by research led by Dundee University into "space weather" emanating from the Sun.
Comet landing gets green lightThe European Space Agency confirms the decision to try to land a robot on Comet 67P/Churyumov-Gerasimenko on Wednesday 12 November.
Snail named after marriage equalityA new species of hermaphrodite land snail found in Taiwan has been named in support of marriage equality.
Fossils from 'oldest Parisian'Scientists unearthed rare, ancient human remains in silts close to the River Seine in France.
Painted caves challenge art originsThe discovery of 40,000-year-old artworks in Indonesian caves challenges established views on the origins of humans' artistic capabilities.
Paterson in 'lights out' warningThe government's energy policy will "fail to keep the lights on", the former environment secretary has said.
UK waters face 'invasional meltdown'Scientists warn that an army of organisms from Turkey and Ukraine is poised to invade Britain's waterways and destroy native species.
Woman finds three-inch leech in noseA backpacker finds a leech which had been living in her nose for a month after returning from a trip to South East Asia.
Antikythera wreck's new treasuresAn international expedition says it has found further, remarkable finds at the site of the famous Antikythera shipwreck.
Garlic injection for tree diseaseInjecting trees with a concentrated form of garlic might help save trees in the UK from deadly diseases.
Farmers to protest milk price cutsFollowing the announcement of fresh price cuts, dairy farmers say they will take direct action within the next four days.
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: Plastic food packaging health fearsBBC Inside Out examines whether health fears over plastic food packaging are justified and asks if BPA should be banned in the UK.
VIDEO: New dinosaur 'may be in T-Rex family'Scientists think that a newly discovered species of dinosaur, whose remains were found after 20 years of excavation in Venezuela, maybe related to the Tyrannosaurus Rex.
VIDEO: Oysters flourish again in SwanseaOyster fishing is set to make a comeback in Wales after marine biologists reintroduced 40,000 oysters into Swansea Bay.
AUDIO: Science shines light on dark matterScientists from the University of Leicester say they may have solved one of the most enduring mysteries in modern physics: the nature of dark matter.
VIDEO: Activists blockade Australian portHundreds of climate change protestors have attempted to disrupt shipments of coal from a port north of Sydney using their canoes, kayaks and surfboards to form a blockade.
AUDIO: MPs 'should end Climate Change Act'Parliament should scrap the Climate Change Act and MPs should stop "exaggerating" the effects of climate change, says Owen Paterson.
VIDEO: How Ebola samples are processedGovernment scientists from Wiltshire are calling for micro-biologists to volunteer in the fight against the growing threat of the deadly Ebola virus.
VIDEO: Mussels 'threat to UK waterways'Scientists are warning that an army of shrimps and mussels from Turkey and Ukraine is poised to invade Britain's waterways and kill off native species.
Rosetta comet: More black swan than yellow duckA fascination of comets is their blackness
Ebola: How many people have died?Why we don't know how many people Ebola has killed
The First SpacewalkHow the first human to walk in space nearly didn't return to Earth
Ebola treatments - how far off?How far away is a treatment and vaccine?
Should spy-planes fight US crime?Hi-res surveillance system causes US controversy
How English became language of scienceHow the US changed the language of science
VIDEO: Ponies munch a meadow back to lifeCan a team of ponies munch a meadow back to life?
Bionic arm restores sense of feelingBionic hands restore sense of touch in two patients
The battle to make Tommy the chimp a personThe chimp that a rights group wants recognised as a person
Virgin Galactic: Space could finally be getting closerIs Virgin Galactic closer to the dream of commercial spaceflight?
The last eel catcher of RomeThe last eel catcher fishing the river in Rome
Dealing with Dounreay's leftoversDealing with the leftovers from the Dounreay demolition job
VIDEO: Girl, 13, could be first human on MarsCould 13-year-old be first human to reach red planet?
From Alien to Fifa: The art of noiseThe magic of video game sound effects





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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
Algorithms & Software : Patrick Wessa, PhD
Server : www.wessa.net

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