::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
Memories 'flipped' from bad to goodNeuroscientists artificially turn a mouse's fearful memory into a positive one, and vice versa.
Concerns grow over Iceland volcanoOvernight earthquakes raise fears that magma from Iceland's Bardarbunga volcano could be heading towards another large volcanic system, scientists say.
A sheepdog's 'two rules' for successScientists produce a simple mathematical model that explains how a single sheepdog can herd a large number of sheep.
Global coal 'binge' missed in dataThe climate impacts of the world's fossil-fuelled power plants are being underestimated because of poor accounting, say researchers.
Badger cull targets are announcedA target number of badgers to be killed in this year's pilot cull to tackle tuberculosis in cattle is announced.
World's rarest bird needs new homeThe last remaining population of the world's rarest bird, the Madagascar pochard, needs a new wetland home if it is to thrive again, a study reveals.
Magnetic levitation in 3D advancesHarvard researchers develop a system to orientate small objects in any direction using magnetic levitation.
Potential comet landing sites chosenEurope's Rosetta mission, which aims to put a robot on a comet in November, has identified five potential sites for the touchdown.
Methane vents bubble up off US coastResearchers say they have discovered more than 500 bubbling methane vents on the seafloor off the US east coast.
Whole organ 'grown' in world firstA whole functional organ has been grown from scratch inside an animal for the first time, say researchers in Scotland.
Galileo satellites on wrong orbitThe European Space Agency says the latest two satellites for Europe's version of the US GPS sat-nav system have not gone into the correct orbit.
MH370 search faces tough next phaseThe next part of the hunt for the missing Malaysia Airlines jet MH370 will be very challenging in places, sea-floor mapping data suggests.
Warming 'pause' may last until 2025The hiatus in the rise in global temperatures is being caused by the Atlantic Ocean and could last another 10 years, say researchers.
Stench of decay turns coral awayBaby coral and fish can smell the difference between good and bad reefs, say marine ecologists.
Hints of elusive early stars foundAstronomers may have discovered the chemical signature of one of the Universe's earliest stars.
Seals 'brought TB to the Americas'Marine mammals brought tuberculosis to the Americas before the Europeans arrived, a study suggests.
Lockheed Martin in space junk dealUS defence giant Lockheed Martin is teaming up with an Australian technology firm to track space debris that can damage multi-billion dollar satellites.
Urban areas are hives for wild beesA study finds a "considerable richness" of bee species in urban habitats, suggesting cities could help maintain healthy populations of the vital pollinators.
Rosetta's 10-billion-tonne cometScientists determine the comet being followed by Europe's Rosetta spacecraft to have a mass of 10 billion tonnes.
Curiosity drill test cut shortNasa's Curiosity rover looks to examine another sample of Martian rock, but its drill test in a slab dubbed "Bonanza King" fails to complete properly.
Darwin's barnacles found in DenmarkA gift from the world-famous naturalist is to go on display in Copenhagen.
Four white lion cubs born in GermanyFour rare white lion cubs - three males and one female - are born at a circus on tour in eastern Germany.
Earliest evidence of snail-eatingPalaeolithic humans in Spain began eating snails 10,000 years earlier than their Mediterranean neighbours, a study reveals.
Tree-hugging snakes put safety firstFor the first time, biologists measure the force applied by climbing snakes and find that they squeeze up to five times harder than necessary.
Greenland ice sheet losses doubleA new assessment from Europe's CryoSat spacecraft shows Greenland to be losing about 375 cu km of ice each year.
'Growth drives UK flooding problems'Part of the UK's problem with flooding is self-imposed, according to new research.
Iceland raises volcano alert levelThe risk of an eruption at Iceland's Bardarbunga volcano has increased, as well as the risk level to the aviation industry, meteorologists say.
Magpies 'don't steal shiny objects'Science dispels the popular myth that magpies like to steal shiny objects for their nests.
Spiders 'do better' in citiesFemale orb-weaving spiders grow larger and have an increased ability to reproduce when living in urban areas, a new study shows.
SeaWorld to redesign its whale tankThe US marine park SeaWorld is to build a new killer whale enclosure as criticism grows over how the park handles the animals.
Rare species found in marine studyDivers discover rare species of marine life such as stalked jellyfish and squat lobsters in a study of Somerset's Porlock Bay.
Osprey pair nest at nature reserveA pair of rare ospreys nest at a nature reserve in Cumbria for the first time, conservationists confirm.
Drugs-bust primate given UK asylumA primate confiscated during a drugs raid by police in the Maldives is flown 5,000 miles to the UK to start a new life.
VIDEO: Litter bug mountaineers 'must recycle'Over the decades tonnes of disposed tents, spent oxygen cylinders and bottles have been left behind on Mount Everest by people trying to scale it. Now authorities are urging them to bring the waste back down with them to recycle it.
AUDIO: Puffins 'Frankie Howerd of bird world'A study by the National Trust suggests seabirds around the UK coastline are being hit by a "triple whammy" of extreme weather, predators and disturbance by humans.
VIDEO: Taps run dry amid California droughtCalifornia has been hit by its worst drought in a century and many say the problem is only going to get worse.
VIDEO: Buddleia: Gardener's friend or foe?BBC Newsnight's Stephen Smith visits Dover to assess how much of a threat buddleia is to native species
VIDEO: How sheepdogs control unruly flocksA farmer explains his relationship with his sheepdog, after researchers help unravel the mystery of how the animals do their job.
VIDEO: Aurora Australis filmed from spaceThe European Space Agency releases time-lapse footage of the Aurora Australis, or southern lights, filmed from the International Space Station.
VIDEO: Rare duck needs new homeThe world's rarest bird is facing extinction unless it finds a new home, say conservationists
VIDEO: First birthday for panda cub Bao BaoThe National Zoo in Washington DC has been celebrating panda cub Bao Bao's first birthday.
'Antarctic audit' for marine lifeNew atlas catalogues 9,000 Southern Ocean species
Sniffing out the allergy epidemicWhy so many of us are developing allergies
Warning over electrical brain stimulationWarning over electrical brain stimulation
UK air pollution fuels official concernMeasuring and tackling an invisible killer
Study creates 'virtual time travel'Using virtual reality to 'go back in time'
Fence to stem human-elephant conflictSri Lanka tree barrier could prevent conflict
Galileo: We know where you areWhat pinpointing positions on the planet could mean for you
Antarctic hides extreme ecosystemAn ecosystem thrives in the freezing Antarctic underbelly
Can eating meat be eco-friendly?Which is the best eco option - eating beef, chicken or mussels?
The economic impact of EbolaHow Ebola crisis has affected West Africa's economies
VIDEO: Could this man help save the world?UK man keeps eye on dangerous asteroids
Rescuers comb Japan landslide siteRescuers comb through the site of Japan landslides





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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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