::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
Nepal quake 'followed historic pattern'Nepal's devastating magnitude-7.8 earthquake on Saturday was primed over 80 years ago by its last massive earthquake in 1934, geologists working in the region say.
Hidden lives of Chernobyl's wildlifeScientists' camera traps offer a snapshot into the secret lives of wildlife inside the Chernobyl Exclusion Zone.
Hastings fishermen seek 'fair share'In the tightly contested seat of Hastings and Rye, it is the topic of fishing quotas that has become a key election issue
'We print people': The world of 3D portraitureAn up-close encounter with the growing business of little, 3D-printed portraits. Cool or just a little bit creepy?
Vast replica recreates ancient caveBBC Newsnight gets rare access to one of the most important cave art sites in the world - and visits its vast replica, which is about to open in France.
Why Nepal is so vulnerable to quakesThe Magnitude 7.8 Nepal earthquake has occurred in what is one of the most seismically active regions in the world.
Tinnitus mapped inside human brainFor the first time, brain signals relating to the constant ringing noise of tinnitus have been mapped across a wide area inside a patient's brain.
Mammoth genome sequence completedSwedish scientists have decoded the DNA of woolly mammoths raising the possibility of recreating the now extinct creatures
Hubble issues 25th birthday imageThe Hubble Space Telescope celebrates its silver anniversary with a picture featuring a spectacular vista of young stars blazing through a dense cloud of gas and dust.
Bees 'get a buzz' from pesticidesBees prefer food containing neonicotinoid pesticides, according to research.
Graveyard clue to stegosaur platesStegosaurs may have sported quite different shaped bony plates on their backs, depending on whether they were male or female, new research claims.
In pictures: Calbuco volcano eruptionCalbuco volcano erupts in Chile sending smoke and ash into the sky. The authorities have declared a red alert and evacuated more than 4,000 people
Super-rat history extracted from DNAScientists piece together the history of a group of extinct Caribbean rats, some of which grew to the size of cats.
Baby wallaby dies in keeper's armsAn orphaned baby wallaby on the Isle of Man dies in her keeper's arms after a week of round-the-clock care.
Study queries non-hazardous plasticResearchers question the non-hazardous ranking of plastic, saying its environmental impacts are not subject to the same level of scrutiny as other pollutants.
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: 'My son told me to use social media'Nasa astronaut Chris Hadfield talks about using social media in space, including recording "Space Oddity" and taking photos at 8kms a second
VIDEO: Replica recreates prehistoric caveBBC Newsnight gets rare access to one of the most important cave art sites in the world - and visits its vast replica, which is about to open in France.
VIDEO: Hubble Telescope's 25 years in imagesAs the Hubble Telescope celebrates its 25th anniversary, BBC News looks back at some of its greatest moments - and images.
VIDEO: Timelapse footage of Chile volcanoThe Calbuco volcano in southern Chile has erupted twice in the space of a few hours - having lain dormant for decades.
VIDEO: How Hubble opened up the UniverseAs Nasa prepares to unveil a new image to celebrate the 25th anniversary of the Hubble Space Telescope, the BBC's Jane McCubbin reports on how it has enhanced our appreciation of the Universe.
VIDEO: Cheers as Solar Impulse lands in NanjingSolar Impulse has landed safely in Nanjing in the east of China, much to the delight of its mission control team.
VIDEO: Sumatran rhino in need of a mateThe Borneo Rhino Alliance are trying to find a suitable mate for a Sumatran rhino.
VIDEO: New glass frog has translucent skinA new species of glass frog has been found in the Talamanca mountains of Costa Rica.
Hunting whales with rowing boats and spearsThe men who hunt huge prey with rowing boats and spears
A turtle's paradise in the CaribbeanOne island's bid to track the shy sea creatures
Changing the signals on Britain's railwaysIs there about to be a cure to 'signal failure'?
In pictures: Earth's beautyEarth's beauty as seen from space
In pictures: Nigeria's frog kebabs'They're tastier than fish'





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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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