::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
Mediterranean 'accumulating plastic'Large quantities of plastic debris are building up in the Mediterranean Sea, say scientists.
Ratchet boots make walking 7% easierEngineers create unpowered exoskeleton "boots" that use a spring and a ratchet to make human walking 7% more efficient.
LHC fixes glitch, prepares for beamsThe short circuit delaying the restart of the Large Hadron Collider has been fixed, after a blast of high current melted the metal particle responsible.
US makes climate pledge to UNThe US has pledged to tackle climate change by cutting its carbon emissions 26-28% by 2025.
EU milk quota system is abolishedEU milk quotas are scrapped, bringing an end to more than 30 years of efforts to prevent overproduction.
China building 'great wall of sand'The scale of China's land reclamation in the South China Sea is leading to "serious questions" on its intentions, a top US official says.
New renewables break capacity barNew renewable generating capacity broke the 100GW barrier in 2014, equivalent to the entire fleet of nuclear power plants in the US, a UN report shows.
Ants in space grapple with zero-gA study finds that ants on board the International Space Station still use teamwork to search new areas, despite falling off the walls of their containers for up to eight seconds.
Indian monsoon's past analysedFossils from the ocean floor are yielding clues to the Indian monsoon millions of years ago.
Solar aeroplane lands in ChinaSolar Impulse, the fuel-free aeroplane, lands in Chongqing, China, to complete leg five of its attempt to fly around the world.
Mercury 'painted black' by cometsThe mystery of Mercury's dark surface can be explained by a steady dusting of carbon from passing comets, research suggests.
Porpoises use 'sound searchlights'Porpoises finely adjust the size of the beams of sound they use to hunt - using sound like a searchlight to trap their prey, a study finds.
Tech sites lead on April Fools gagsThe Force - the mysterious energy field used by the Jedi in Star Wars - has been discovered by researchers at the Cern laboratory in an April Fools prank.
Graphene light bulb set for shopsA light bulb made with graphene - said by its UK developers to be the first commercially viable consumer product using the super-strong carbon - is to go on sale later this year.
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: £135k to move voles: Money well spent?£135,000 was spent relocating water voles so work could begin dredging two Somerset rivers in 2014.
VIDEO: The secret language of whalesResearchers at the Smithsonian Institution in Washington say whale communication depends on jaw movements and the methods these mammals use to catch food.
VIDEO: Taste testing desert's solar plant waterA new multimillion dollar project that uses solar power to treat underground saline water is offering a ray of hope in south east Pakistan.
VIDEO: Abandoned horses 'crisis' - RSPCAThe RSPCA says it is looking after so many abandoned horses, donkeys and ponies that it cannot take in any more.
VIDEO: A year in space: Soyuz docks at ISSA Russian Soyuz spacecraft has docked at the International Space Station carrying three astronauts, two of whom are due to spend a record 12 months there.
VIDEO: How porpoises use sound to huntResearchers in Denmark have discovered that porpoises can adjust the beams of sound they use to hunt.
VIDEO: Solar plane takes off in MyanmarThe Solar Impulse 2 plane has departed from Mandalay in Myanmar as part of its round-the-world flight, Kasia Madera reports
Are we tired of climate change talk?Has the media lost interest in climate change?
Can you win at anything if you practise hard enough?A one-year experiment asks if learning is more about hard work than natural ability
Is fibre key to connecting Africa?Is fibre key to connecting Africa?
What is the point of the Large Hadron Collider?What are the justifications for the £4bn Large Hadron Collider?

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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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