::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
Earth's rarest minerals cataloguedScientists categorise the Earth's rarest minerals with some so rare that the total global supply could fit in a thimble.
US scientists warn on 'dustbowl' riskUS scientists have modelled how a 1930s-like "dustbowl" drought might impact American agriculture today, and found it to be just as damaging.
Gravitational waves: Numbers don't do them justiceReflecting on the significance of Thursday’s announcement – and the mind-boggling scale of the black hole merger itself.
Quake mobile app invites public testA new app that turns a smartphone into a mobile seismometer is being rolled out by California scientists.
Polluted air 'causes 5.5m deaths a year'More than 5.5 million people worldwide are dying prematurely every year as a result of air pollution, according to new research.
Ground control bids farewell to PhilaeThe Rosetta mission team says it is time to give up hope of ever hearing again from the comet lander Philae.
Farmers on alert for livestock virusFarmers are being warned to expect an outbreak of a highly infectious animal disease called bluetongue this summer.
'Health risk' legacy from NeanderthalsScientists find a wide range of ailments are strongly influenced by our Neanderthal heritage.
'Ripples' from black holes detectedFor the first time, scientists detect tiny, rhythmic distortions in space and time - gravitational waves - predicted by Einstein 100 years ago.
Record year for river fish releasesAlmost two million captive-bred fish and larvae were released in 2015 to boost populations in England's rivers, says the Environment Agency.
Toxic chemicals found in beached whalesA pod of whales stranded in Fife in 2012 are found to have had high concentrations of toxic chemicals in their bodies, scientists find.
Court halts Obama's key climate planPresident Obama's plans to regulate emissions of carbon dioxide from US power plants are stalled by the Supreme Court.
Climate change 'to make flights longer'Flights from the UK to the US could take longer due to the changes in the climate, according to a new study.
Horses recognise human emotionsHorses discriminate between happy and angry human facial expressions, according to research.
Flashes of light may stop jet lagExposure to short flashes of light at night could help travellers adjust to new time zones and avoid jet lag, according to scientists.
Bears hibernate 'with bacterial help'A Swedish study suggests that changes in the gut flora of brown bears help them to cope with the weird metabolic demands of hibernation.
Legal breakthrough for Google carGoogle's self-driving technology should be considered a legal driver, the US highways authority says.
Bacteria 'see' like tiny eyeballsBiologists discover how bacteria sense light and move towards it: the entire single-cell organism focuses light like a tiny eyeball.
Water rights 'threaten Spanish wetland'One of Europe's most important wetland areas is under threat say environmentalists as Spain and Catalonia argue about the future of the Ebro river.
VIDEO: Spearing giants in 'ocean's Jurassic Park'Spear-fishing expert Colin Chester explains the appeal of fishing off Ascension Island.
VIDEO: 'Mind-boggling' breakthroughScientists say the discovery of gravitational waves will open the window on the formation of the universe.
VIDEO: 'Brainwave orchestra' in first performanceFour members of a Paramusical Ensemble, who are unable to talk or move, are using ground-breaking technology to create music with the power of their minds.
VIDEO: Meet the mysterious deep-sea 'sock'The mystery of a deep-sea creature that resembles a discarded purple sock has been solved, scientists report.
VIDEO: WHO warns Zika could infect millionsThe World Health Organisation has convened an emergency committee to discuss the spread of the Zika virus, which has been linked to thousands of birth defects in Latin America.
VIDEO: Copying the brain's origami using gelScientists replicate how the human brain folds using a 3D model made out of gel, and computer simulations.
VIDEO: Bite by bite: Shark eats sharkA female sand tiger shark has slowly eaten a smaller male shark in a Seoul aquarium, bite by bite
VIDEO: Chris Packham on polecat comebackPolecats, which were almost wiped out in Britain in the last century, have made a remarkable recovery. Naturalist Chris Packham explains.
Gravity search was 'a global effort'The search for gravitational waves was a global effort
Why did the half-plane, half-helicopter not work?Why did the half-plane, half-helicopter not work?
Did a meteorite kill a man in India?Did a meteorite kill a man in India?
Dating dispute over 'oldest Koran'Carbon dating row over 'oldest Koran'
Caves reveal Australia wasteland's secret pastCaves reveal a desert's rainforest past
Winning photos from beautiful gardensWhat is the most beautiful garden photo of the year?

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To cite Wessa.net in publications use:
Wessa, P. (2016), 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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