::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
New EU radar satellite takes first imageThe EU's newest Earth observation satellite, Sentinel-1b, has returned its first radar imagery - of Svalbard, the Norwegian archipelago.
Neonics 'not equally harmful' to beesThe largest field-study so far in to the group of pesticides called "neonicotinoids" has concluded that each acts differently on the brains of the bees.
Glaciers with a flotilla of 'ice sails'Scientists describe the processes that drive "ice sails" - a rare and somewhat esoteric feature of debris covered glaciers.
Gene therapy reverses sight lossA genetic therapy improves the vision of some patients who would otherwise have gone blind.
Delayed Russian rocket lifts offRussia launches the first rocket from its new Vostochny cosmodrome, following a 24-hour delay that drew the ire of President Vladimir Putin.
Brain's 'atlas' of words revealedScientists in the US have mapped out how the brain organises language.
Mars mission by 2018 says SpaceXBillionaire Elon Musk plans to send his Dragon spacecraft to Mars as early as 2018.
James Webb's mirror is revealedThe covers come off the huge mirror that the James Webb Space Telescope - the planned successor to Hubble - will use to detect the light from the first stars to shine in the Universe.
More clean air zones needed, say MPs"Clean air zones" targeting drivers of high-polluting vehicles should be extended to more cities in England, MPs say.
'Human swan' to join Russia migrationA conservationist plans to take flight this autumn alongside thousands of swans as they make a 4,500-mile journey from the Russian arctic to the UK.
Beagle probe 'seen in sharper view'Supporting evidence that the Beagle-2 probe is sitting intact on the surface of Mars has come from a new imaging technique developed by UCL scientists.
Second EU radar satellite launchesThe European Space Agency launches a second radar satellite into the EU's new Sentinel constellation, to acquire a complete map of the Earth every six days.
Wind farms' climate impact recordedIn the first study of its kind, scientists have been able to measure the climatic effect of a wind farm on the local environment.
Rise in CO2 has 'greened Planet Earth'The emissions of carbon dioxide from industrial society has spurred a huge growth in trees and other plants, says a report.
Volcano implicated in Maya upheavalScientists think they can now tie the disruption that hit Maya civilisation in the 6th Century to an eruption of the El Chichon volcano.
Dali helps scientists crack our brain codeScientists at Glasgow University establish a world first by cracking the communication code of our brains.
Peake 'runs' London Marathon in spaceUK astronaut Tim Peake has run the distance of the London Marathon on a treadmill in the International Space Station (ISS).
Solar Impulse completes Pacific flightThe zero-fuel aeroplane Solar Impulse completes a three-day flight from Hawaii across the Pacific Ocean, to land in California.
Nations sign historic Paris climate dealAmid hope and hype, delegates have finished signing the Paris climate agreement at UN headquarters in New York.
VIDEO: Gene therapy could reverse sight lossA pioneering new treatment is giving is new hope for those with macular degeneration, as Pallab Ghosh reports.
VIDEO: Rescued circus lions to fly to South AfricaMore than 30 lions which have been rescued from circuses in Peru and Colombia are to be flown to a sanctuary in South Africa.
VIDEO: 'Fat' gorilla surprises zoo with babyA gorilla has given birth at Prague Zoo, without keepers noticing she was pregnant.
VIDEO: When will China get to Mars?China is due to announce more details about a mission to Mars.
VIDEO: Space station gets inflatable extensionAn experimental inflatable module has been attached to the International Space Station remotely by a Nasa ground control team.
VIDEO: Repaired Solar Impulse flies againThe zero-fuel aircraft Solar Impulse is ready to resume its round-the-world challenge following repairs in Hawaii.
VIDEO: How do Monarch butterflies navigate?Scientists in the United States say they have solved one of nature's great navigation mysteries, how Monarch butterflies migrate all the way from Canada to Mexico.
VIDEO: Schools plant seeds sent from spaceSchools in the UK are to receive seeds that British astronaut Tim Peake has sent back from the International Space Station.
VIDEO: The world's worst nuclear disasterThe aftermath of the Chernobyl explosion
Bloodhound Diary: Planning for the roughest of ridesWhat's it going to be like to drive at 1,000mph?
Is world's greenest office also smart?The building is high tech but are the workers on board?
The man who culls wallabies by the thousandMeet the man who shoots 30,000 wallabies a year
The 'next Einstein'? She's from AfricaShe may just come from Africa
Computer science A-level 1970s styleComputer science A-levels in the 1970s

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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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