::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
LHC restart sees first collisionsFor the first time since 2013, the Large Hadron Collider smashes protons together - albeit at fairly low energies for now.
Ice cores show 200-year climate lagScientists find 200 year lag time between past climate events at poles, according to a new study in Nature.
Big whales have stretchy nervesScientists discover one of the secrets of how the world’s biggest whales engulf their own weight in water and food: the nerves in their big jaws are incredibly stretchy.
Climate drives new era in Arctic seaChanges in the Arctic Ocean are so profound that the region is entering what amounts to "a new era", according to Norwegian scientists.
Wildlife drop 'may empty landscape'About 60% of the world's largest herbivores are at risk of extinction, according to research by an international team.
Why some quakes are worse than othersWhy is it that two apparently similar earthquakes can have such different outcomes in terms of the number of people killed and the damage that results?
Step forward for quantum computingScientists have made progress towards correcting the errors that are expected to arise in quantum computing.
Song heralds new bird's arrivalThe distinctive song of a secretive and elusive bird in central China helps researchers to describe it as a new species to science.
Climate change risk 'to many species'One in six species on the planet could face extinction due to the effects of climate change if nothing is done to reduce emissions, according to analysis.
Mercury mission ends with a bangAfter a decade in space and four years in orbit, Nasa's Messenger spacecraft reaches the end of its mission and crashes into the surface of Mercury.
Animals need 'airspace reserves'Areas of airspace where human use is restricted could help to protect billions of animals, scientists say.
Tesla unveils battery to power homesUS electric carmaker Tesla Motors unveils batteries that can power homes and businesses in a bid to expand beyond its vehicle business.
Astronauts watch Star Wars in spaceAstronauts aboard the International Space Station celebrate Star Wars Day with a movie pick that may surprise some fans.
Beavers 'adapting well to Scotland'Wild beavers living in the Tay and Earn have adapted well to living in Scotland, studies by Scottish Natural Heritage suggest.
Heatwaves 'more likely' in EnglandEngland is set for more record-breaking warm years like 2014, say scientists.
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: Tour of Norwegian Arctic science shipDavid Shukman takes a look around the bridge, sleeping quarters and laboratories for a taste of life on board the Norwegian Arctic research vessel Lance.
VIDEO: Measuring the effects of pollution on childrenA multimillion pound study has been launched to assess the impact of the environment on the health and development of children.
VIDEO: How 3D scans are helping solve crimesDetectives from the West Midlands are using 3D technology to provide juries with microscopic evidence, previously beyond the reach of forensic testing.
VIDEO: Election 2015: Environmental issuesEnvironment Analyst, Roger Harrabin has been looking at how the parties say they plan to tackle environmental issues in the countryside.
VIDEO: Solving the big cat conflictConservationists and farmers in Namibia have formed a unique partnership to reduce the number of cheetahs and leopards being shot and killed.
VIDEO: Lava overflow from Hawaii volcanoThere have been stunning scenes at Hawaii's Kilauea volcano which has been overflowing lava.
VIDEO: Cat chat: Can felines talk to humans?An American vet has claimed to have decoded the language that cats use, believing that cats use more than a dozen sounds, each having its own meaning.
VIDEO: New York turns lights off for birdsThe state of New York is to turn off non-essential lights in state-run buildings to help migrating birds navigate routes in spring and autumn.
Voyage to the north through ramparts of iceExpedition that paved way for understanding the Arctic
Seeking comet splatter on MercuryUK scientists hunt for comet remains on Mercury
The man who cut out his own appendixThe surgeon who cut out his own appendix
The migration of the eagle huntersThe migration of the eagle hunters
'We print people': The world of 3D portraitureMini 3D portraits - cool or just a little bit creepy?





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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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