::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
UN chief on streets for climate dealUN Secretary General Ban Ki-moon will take part in a protest march this weekend to highlight global inaction on climate change.
'Artificial eye' to detect particlesThe human eye has inspired physicists to create a processor that can analyse particle collisions 400 times faster than currently possible.
Slippery banana study wins Ig NobelResearch that investigated why bananas are slippery when you step on them wins one of this year's Ig Nobel prizes.
Forest land rights need global focusRecognising the land rights of local people could provide cost-effective protection for many of the world's tropical forests, a report says.
Murder 'comes naturally' to chimpsA major international study finds that killings among chimpanzees result from normal competition, not human interference.
Europeans drawn from three 'tribes'Most present-day Europeans are a mixture of three ancient populations, according to a major study published in the journal Nature.
Chin strap turns chewing into powerEngineers build a chin strap that harnesses the energy produced by jaw movements, and could one day power hearing aids or bluetooth earpieces.
Better mobility key for clean citiesEffective urban transit systems can encourage people out of their cars and provide a cost-effective way to tackle climate change, a report suggests.
Nasa picks astronaut ship designsThe US space agency picks the companies it hopes can take the country's astronauts back into space - a capability lost when the shuttles retired in 2011.
Richard III death injuries revealedKing Richard III was probably killed by two blows to the head during a "sustained attack", according to new research.
Ebola vaccine trial beginsA trial of an experimental vaccine against the Ebola virus is to begin in Oxford.
VIDEO: Lasers deliver brighter 3D filmsBBC Click looks at a new laser projector that promises to deliver brighter and clearer pictures.
Inky prints show state of hedgehogsHedgehogs are more thinly spread in the UK than previously believed, a study using ink pads to record their paw prints reveals.
Ebola global security threat - ObamaUS President Barack Obama calls the Ebola outbreak in West Africa a threat to security worldwide while announcing a larger US role, including 3,000 troops, to help fight the virus.
Red card for 'greenest' governmentThe government is failing to reduce air pollution, protect biodiversity and prevent flooding, a cross-party body of MPs says.
Climate change remedies 'affordable'A global commission says the extra costs of tackling climate change will be 'modest', but doing nothing could put the world economy at risk.
Goldfish has brain operationAn Australian goldfish called George is recovering from successful microsurgery in which a large tumour was removed from his brain.
China boy finds 3,000-year-old swordArchaeologists date the weapon to the Shang or Zhou dynasties - the dawn of Chinese civilisation.
Rosetta comet landing site chosenEurope's Rosetta mission, which aims to land on a 4km-wide comet later this year, identifies what it thinks is the safest place to touch down.
Progress for giant laser instrumentThe Advanced Ligo instrument, a laser "ruler" built to measure the traces of gravitational waves, is progressing at amazing speed, scientists say.
Robot could load up dishwasherA robot unveiled today at the British Science Festival will be loading dishwashers next year, its developers claim.
'Giant swimming dinosaur' unearthedA giant fossil, unearthed in the Sahara desert, has given scientists an unprecedented look at Spinosaurus - the largest-known carnivorous dinosaur.
Brain 'still active during sleep'The brain is still active while we sleep, say scientists, who found people were able to classify words according to their meaning during their slumber.
Rosetta comet chaser takes 'selfie'The Rosetta spacecraft has sent a hauntingly beautiful picture of itself from deep space.
Ancient China fish 'nearly extinct'The Chinese sturgeon, thought to have existed for more than 140 million years, is now on the brink of extinction, say local media.
Brazil builds giant Amazon towerConstruction has begun on a giant observation tower in the heart of the Amazon basin in Brazil to monitor climate change.
Western Australia shark cull blockedWestern Australia's shark cull is to be halted after the state's environmental regulator advised against it, citing "scientific uncertainty".
Ban on shark trade comes into forceIn a significant step forward for shark conservation, all trade in five named species is to be regulated from today.
Consumers driving 'shock' tree lossAround five football fields of tropical forest have been illegally cleared every minute between 2000 and 2012 according to a new report.
Blue whale numbers bounce backResearchers believe that California blue whales have recovered in numbers and the population has returned to sustainable levels.
Spitting fish 'adjust for distance'Scientists say the jets of water that archer fish use to shoot down prey are precisely tuned, to make maximum impact at just the right distance.
Badger vaccination scheme under wayA scheme to vaccinate badgers against bovine tuberculosis in a bid to tackle the disease in cattle is launched by the government.
Rare antelope births 'fantastic'The birth of a pair of rare bongo antelopes in captivity is "fantastic news" for the "critically endangered" species, say conservationists.
VIDEO: Hurricane Odile stuns Mexico resortsHurricane Odile causes devastation in the beach resorts of Mexico's Baja California peninsula, triggering looting in some areas.
VIDEO: Cheetah cubs unveiled in San DiegoA pair of three-week-old cheetah cubs are unveiled at San Diego Zoo's Safari Park.
VIDEO: Examining a rare colossal squidScientists have had the extremely rare chance to examine an intact colossal squid after it was accidentally caught in the Antarctic, as Mauricio Olmedo-Perez reports
VIDEO: Leonardo DiCaprio's UN climate roleThe Hollywood actor, Leonardo diCaprio, has been appointed as a United Nations representative on climate change.
VIDEO: Haiti's disease-fighting eco toiletPoor sanitation has caused serious health problems in Haiti - but could a special eco toilet improve the situation?
VIDEO: People power sparking renewable energyIn a shantytown in Rio De Janeiro, a British-backed scientific initiative harnesses the energy we generate in our daily lives to light up a football pitch.
VIDEO: Apes to rulers of the worldNick Higham talks to Israeli historian Yuval Noah Harari about his book Sapiens: A Brief History of Humankind
VIDEO: Formula E ready to raceFormula E is backed by some of the biggest names in the industry and on Saturday Beijing will hold the inaugural race of the season.
Astronomy Photographer of the Year 2014Twinkling stars and swirling gases - winning visions of the night sky
From toilet to table, overcoming the ‘yuk’ factorHow Haitians overcame the 'yuk' factor
The scary element that saved the crew of Apollo 13The scary element that helped save the crew of Apollo 13
Build your Martian dream homeIs this how the cities of Mars will be built?
The freedivers who swim with whalesThe freedivers risking their lives to swim with whales
Five bugs that lurk in changing roomsFive bugs that lurk in changing rooms
Mers: Saudis in push to keep Hajj free from deadly virusHave Saudis done enough to keep Hajj safe from deadly virus?
Alien species making England homeWhy do terrapins live in canals?
Pakistan-India monsoon floods: Averting future disastersDams and reservoirs could mitigate South Asia floods
Mars probe 'inspired by lobsters'Designers of new Mars instrument draw on nature
Squeezing out water to save the futureThe business of saving water for all of our futures
How do you stop lava?Can human engineering stop the flow of volcanic lava?

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To cite Wessa.net in publications use:
Wessa, P. (2014), 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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