::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
Bezos claims successful space flightThe Amazon.com entrepreneur Jeff Bezos flies his New Shepard spaceship again, and this time proclaims a complete success.
Sneezes spray 'sheets and strings'Physicists discover a striking sequence of shifting shapes that is formed as the fluid we sneeze breaks up into droplets.
Australia trial for GM fruit flyAustralia will carry out trials of a genetically modified fruit fly to break the breeding cycle of this crop pest.
COP21: Malawi's battle to hold on to forestsHow Malawi is tackling climate change with the help of a wood-fired cookstove that generates electricity.
Prince Charles: Time to act on naturePrince Charles laments the “economic invisibility of nature” and calls on business leaders to act now to save the world’s natural capital.
London ethnically diverse from startA DNA study confirms London was an ethnically diverse city from its very beginnings, BBC News has learned.
Mutant mosquitoes 'resist malaria'Scientists say they have bred a genetically modified mosquito that can resist malaria infection.
Philippines battles climate dilemmaThe Philippines, which is vulnerable to climate change, has confirmed controversial plans for more coal-fired power stations.
Genetic history of Europeans revealedA study of ancient DNA has shed new light on the genetic history of Europeans, confirming that farming spread across Europe due to an influx of ancient people from what is now eastern Turkey.
UK astronaut 'ready' for first space flightThe BBC's Sarah Rainsford speaks to Tim Peake, who will soon be making history as the first British astronaut to visit the International Space Station.
Morocco to open giant solar plantA giant plant using energy from the sun to power a Moroccan city at night will open next month.
One of last northern white rhinos diesA northern white rhinoceros dies in a zoo in San Diego, California, leaving only three of the animals still alive in the world.
VIDEO: I did this for dad, says Kidman in award speechNicole Kidman was named best actress for her role as pioneering British scientist Rosalind Franklin in the play Photograph 51.
Tesla's Musk seeks 'hardcore engineers'Tesla boss Elon Musk appeals for software engineers to accelerate plans to build self-guiding cars, as the carmaker recalls all Model S cars sold over a potential seatbelt problem.
UK sets up £1bn fund to fight malariaThe UK government is to create a new £1bn fund aimed at eradicating malaria and other infectious diseases.
Brazil dam toxic mud reaches seaA wave of toxic mud in the Rio Doce river in Brazil from a collapsed dam at an iron ore mine reaches the sea amid concerns of severe pollution.
Half of Amazon trees 'face extinction'More than half of all tree species in the Amazon face extinction, warn international scientists.
VIDEO: Test flight for 'reuseable spaceship'The Amazon.com entrepreneur Jeff Bezos has claimed success on the second flight of his New Shepard spaceship.
VIDEO: Conservation's 'gadget man'Meet the RSPB's 'gadget man' who builds devices to help conservation scientists gather data.
VIDEO: A brief history of climate talksRebecca Morelle reports for BBC Newsnight on the background to the upcoming summit in Paris.
VIDEO: Japan launches telecom rocketJapan's Aerospace Exploration Agency launches a commercial satellite into space for the first time.
VIDEO: Why Philippines faces climate questionsThe Philippines, which is vulnerable to climate change, has confirmed controversial plans for more coal-fired power stations.
VIDEO: How to charge your phone using mudSmall generators that use heat to make electricity have gone on trial in parts of Malawi where only 10% of the population has access to power.
VIDEO: IVF 'best option' to save white rhinosThe chief executive of the Ol Pejeta Conservancy in Kenya, Richard Vigne, tells the BBC that in-vitro fertilisation (IVF) is the best option to save the northern white rhinoceros.
VIDEO: Video captures songbird quick-stepScientists capture high-speed footage of songbirds performing a rapid-fire "tap dance" that is invisible to the naked eye.
The hunt for Einstein's missing wavesThe hunt for Albert Einstein's missing waves
US states at risk from climate changeFive US states where climate change could be disastrous
In pictures: Royal Society photo award winnersRoyal Society photo award winners
Do we underestimate plants and trees?What can trees and plants teach us?
Should politicians decide science funding?Should politicians have more say on science funding?
Bloodhound Diary: Getting 'ready to roll'The sequence for firing up a supersonic car

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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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