::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
Science chief warns on acid oceansThe UK's chief scientist says the oceans face a serious and growing risk from man-made carbon emissions.
EU leaders agree CO2 emissions cutThe EU agrees what it calls "the world's most ambitious" deal to cut greenhouse gas emissions by 40% by 2030, overcoming deep divisions among members.
North America gears up for eclipseSkywatchers in North America will be treated to the final eclipse of the year on Thursday.
Monster shark 'kept whales in check'The extinction of the biggest shark known to science may have triggered whales to grow to their current hefty sizes, a study suggests.
Turtles tracked on swimming frenzySmall tags stuck to the undersides of baby loggerhead turtles are used to follow the animals' frenetic first hours.
DNA yields secrets of human pioneerDNA analysis of a 45,000-year-old human has helped scientists pinpoint when our ancestors interbred with Neanderthals.
Farmland birds show rapid declineFarmland birds are at their lowest levels since records began, according to government figures.
Significant Bronze Age pottery findA significant Bronze Age pottery find is made during an archaeological dig on the east side of Lewis, in Scotland.
Slumbering lions win top photo prizeA black and white image of lions resting on a rock outcrop in the Serengeti has won the 2014 Wildlife Photographer of the Year award.
Wind farms outstrip nuclear powerThe UK's wind farms generated more power than its nuclear power stations on Tuesday, the National Grid says.
Tractor beam breaks distance recordScientists have turned a laser into a reversible "tractor beam" that can repel or attract objects.
Pesticide bans 'could hit UK crops'The EU's decision to ban the use of some pesticides could threaten UK crops, increase food prices and hit farmers' profits, a report claims.
Man walks again after transplantA paralysed man becomes the first in the world to walk again following a pioneering therapy which involved transplanting cells from his nose into his severed spinal cord.
Ebola serum for Africa 'in weeks'Treatments to tackle the Ebola outbreak in West Africa should become available in the coming weeks and months, says the World Health Organization.
Europe 'will fail to protect climate'IPCC expert says EU's plan consigns future leaders to “extraordinary and unprecedented” CO2 cuts.
African solar plan to power UK homesInvestors are seeking funding from the UK government for an ambitious plan to import solar energy generated in North Africa.
Mystery of giant arm dinosaur solvedTwo dinosaur skeletons have been unearthed in Mongolia, solving a mystery that has baffled palaeontologists for 50 years.
Gladiators were 'mostly vegetarian'Roman gladiators had a diet that was mostly vegetarian, according to an analysis of bones from a graveyard where the fighters were buried.
Physics reveals how nature sparklesResearchers reveal that the same physical mechanism is behind many of nature's most dazzling shines.
Sex emerged in ancient Scottish lakeThe first animals to copulate were small fish that lived 385 million years ago in what is now Scotland, a study suggests.
Mysterious US space plane returnsAn unmanned US military plane on a secretive two-year mission in space has returned to Earth in California.
Audi claims self-drive speed recordAudi says one of its self-drive test cars topped 149mph (240km/h) at a race track in Germany, beating a human-driven version.
Comet Siding Spring skims past MarsA recently discovered comet known as Siding Spring passes Mars, giving scientists a unique chance to study the object.
Name sought for comet landing siteThe public are being invited to name the site on a comet where a European robot will try to land on 12 November.
UK city planning advice for ChinaUK planning experts are to advise Chinese mayors on the benefits of building environmentally friendly cities.
Aussie bees fight 'hive wars'Bee colonies in Brisbane are waging war for months on end, according to a new study, and the victorious swarms are taking over the hives of rival species.
New disease 'killing amphibians'A deadly new disease has emerged in Spain that is wiping out amphibians, scientists report.
Giant kangaroo 'walked on two feet'A family of extinct kangaroos, three times bigger than living species, probably walked rather than hopped, according to a detailed study of their bones.
Carnivores 'help trees shed thorns'The presence of carnivores, which control herbivore numbers, helps plants without thorny defences thrive, a study of life on the savannah reveals.
Smart meters open to hack attackSmart meters widely used in Spain can be hacked to cut power bills, two security researchers find.
Threatened birds of prey 'vanish'Two of the rarest birds of prey in England, which had been satellite tagged, vanish in unexplained circumstances.
Hyenas feast at vulture restaurants"Restaurants" of dead meat set up for endangered vultures also attract an undesirable clientele of hyenas and jackals, according to a six-year study.
Brazil releases 'good' mosquitoesBrazilian researchers release thousands of mosquitoes infected with a bacteria that suppresses dengue fever into the environment in Rio de Janeiro.
VIDEO: Farmland birds show rapid declineFarmland birds are at their lowest levels since records began, according to government figures.
VIDEO: Battle over the Great Barrier ReefExpanding coal mining operations along the Queensland coast could threaten Australia's treasured Great Barrier Reef.
VIDEO: Chimps carry out night time raidsWild chimps carry out night time crop raids, footage reveals, suggesting the animals are being pushed into more risky behaviour.
VIDEO: Orphan baby elephant rescued from wellAn elephant calf has been air rescued after he fell down a well in the remote region of Milgis Lugga in Northern Kenya.
VIDEO: Charge for carrier bags in ScotlandA public awareness campaign is being launched to highlight the carrier-bag charge which has come into force in Scotland.
VIDEO: EU pesticide ban 'threatens crops'A report published today claims that banning too many pesticides will lead to lower yields on farm, which in turn could result in an increase in food imports, and job losses
AUDIO: Are we alone in the Milky Way?Prof Brian Cox muses on whether life here on Earth is unique within the Milky Way and what this might mean.
VIDEO: Origins of intercourse traced to fishScientists believe they have traced the origin of copulation to fish found in a Scottish lake 385 million years ago.
Photos capture beauty of GreenlandAustralian photographer explores Greenland's ice sheet
Search for world's smartest cityTwo very different paths to smarter cities
Chimps filmed in 'daring' food raidsFootage reveals wild chimps on night-time crop raids
Hobbit find rewriting human historyTiny species found a decade ago in Indonesia caused big rethink
Rosetta comet: More black swan than yellow duckA fascination of comets is their blackness
Ebola: How many people have died?Why we don't know how many people Ebola has killed
Life Story with David AttenboroughDavid Attenborough's new series on the journey through life
The First SpacewalkHow the first human to walk in space nearly didn't return to Earth
Ebola treatments - how far off?How far away is a treatment and vaccine?
Should spy-planes fight US crime?Hi-res surveillance system causes US controversy
How English became language of scienceHow the US changed the language of science
VIDEO: Ponies munch a meadow back to lifeCan a team of ponies munch a meadow back to life?





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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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