::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
Spiders strum on leaves for lovePurring spiders use leaves as microphones and speakers to transmit their purring courtship song to a female, scientists find.
Ocean's 'tiniest organisms' revealedThousands of species of the ocean's tiniest organisms are revealed in a series of studies.
Antarctic in 'dramatic' ice lossSatellites have recorded a big sudden change in the behaviour of glaciers on the Antarctica Peninsula, according to a UK-based team.
Ancient parasite 'frozen in time'Researchers discover the 425-million-year-old remains of a new species of parasite - still clamped to the host animal it invaded.
DNA hints at earlier dog evolutionSwedish researchers say that dogs may have been domesticated much earlier than some studies suggest.
Bronze Age Danish girl 'German-born'New research reveals that a girl buried 3,400 years ago in Denmark who became one of the country's best-known Bronze Age relics was probably born in Germany.
LHC smashes collision energy recordThe Large Hadron Collider is smashing protons at the highest energy ever attempted - but they are only test collisions, as the LHC continues to gear up its second run.
California probes oil spill causeClean-up crews are working around the clock as investigators look into how tens of thousands of gallons of oil spewed into the sea off Santa Barbara.
Oldest tools pre-date first humansStones tools that are 3.3 million years old have been unearthed pre-dating the earliest-known humans in the Homo genus.
El Nino could 'disrupt food markets'The El Nino event predicted for later this year has the potential to increase food prices, say climate scientists.
Advanced gravity hunt is green litScientists hold a dedication ceremony to inaugurate the Advanced Ligo facilities, which will be trying to detect gravitational waves from some of the most violent events in the cosmos.
Engineering prize names shortlistThree firms working in very different fields make the 2015 shortlist for the MacRobert Award, the UK's longest-running engineering prize.
'Home-brewed morphine' made possibleScientists have figured out how to brew morphine using the same kit used to make beer at home.
Tim Peake launches space food testBritish astronaut Tim Peake invites schoolchildren to help him in an experiment to learn more about how to grow food in space.
UK among worst in wildlife leagueThe UK is among the worst countries in the EU for protecting its wildlife habitats, says an official report.
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: How an ancient parasite was frozen in timeProfessor David Siveter from the University of Leicester explains how a 425 million year-old parasite was frozen in time at a site in Herefordshire.
VIDEO: Dog evolution 'earlier than thought'Dogs may have been domesticated much earlier than previously though, Swedish researchers suggest.
VIDEO: Inuit challenge to EU seal banThe Inuit people of Greenland are challenging an EU ban on seal hunting and the trade in seal meat and skins, arguing it has "crashed" the Inuits' economy.
VIDEO: New ways to grow food in spaceA project will see thousands of schoolchildren experiment on seeds that have spent six months on the International Space Station.
VIDEO: Saving North Yorkshire's Tansy beetleA breeding programme is being set up for the rare Tansy beetle, which is threatened with extinction.
VIDEO: Will your favourite beach fail new test?Dozens of British beaches and lakes are at risk of failing to meet tougher European water quality standards this summer.
VIDEO: Wheelchair user to cross Pennine TrailRoy Taylor will cross 68 miles of the Trans Pennine Trail in his wheelchair to help raise money to "get rid of obstacles" to give the disabled greater access to the countryside.
VIDEO: 'Simple shaving cut could kill you'Economist Jim O'Neill, the head of a UK government-appointed team looking at the impact of superbugs, tells Victoria Derbyshire the antibiotics crisis could cost millions of lives.
The element that made the 20th Century shineThe element that made the modern era gleam
Romania acts to save forests from sawRomania gripped by tensions over illegal logging
The miracle of the 20-week strawberry seasonThe UK strawberry industry is expected to smash its sales record this year by £50m.
'Cyber-archaeology' salvages lost Iraqi artCyber-archaeology is salvaging artworks destroyed by militants
The Quiet Zone: Where mobile phones are bannedWhere mobile phones are banned for 13,000 square miles





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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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