::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
Pluto probe 'on course' for flybyThe New Horizons spacecraft lost very little science data when it went into "safe mode" at the weekend, the mission team says.
'More hot summers' for parts of UKScorching summers such as the one in 2003 look set to become more common in England and Wales, a study suggests.
BBC unveils final Micro Bit designThe BBC's forthcoming mini-computer gains features absent in an earlier prototype, but is also to be more bulky when used as a standalone device.
Cats 'control mice' with chemicalsScientists say a compound in cat urine changes mouse behaviour, making them less afraid of cats.
Solar Impulse completes epic flightSolar Impulse, the aeroplane that is powered only by the sun, lands in Hawaii after making a historic 7,200km flight across the Pacific from Japan.
CO2 emissions threaten ocean crisisA major report warns that life in the seas will be irreversibly changed unless CO2 emissions are drastically cut.
Cystic fibrosis gene therapy boostA gene therapy has stabilised and slightly improved cystic fibrosis in some of 136 patients in a trial.
Why insects are marvels of engineeringSuper slow-motion video reveals the engineering secrets researchers can learn from the creatures' spring-loaded legs.
Limited badger cull to start in NINorthern Ireland is to start a limited cull of badgers as part of a research project to combat a disease in cattle that costs the taxpayer £30m a year.
Pluto shows its spots to Nasa probeThe New Horizons mission to Pluto releases new colour views of the dwarf planet, revealing some intriguing dark spots.
BP to pay £12bn for Gulf oil spillBP has reached an $18.7bn (£12bn) settlement with the US Department of Justice following the 2010 Gulf of Mexico oil spill.
Global prize for anti-poverty leaderThe founding chairman of a leading rural development and anti-poverty organisation wins the 2015 World Food Prize.
Oranges bug 'hacks insect behaviour'A deadly disease of citrus plants spreads by manipulating its insect host, research suggests.
'Leap second' delays midnightMidnight came later on Tuesday as for the first time in three years an extra second was added to the official time set by atomic clocks.
New test pins down 'time of death'Forensic researchers develop a new method for establishing an accurate time of death after as much as 10 days.
VIDEO: The science behind the pollen countThe pollen count is an important part of the weather forecast for the estimated 31 million people who suffer from hayfever.
VIDEO: Acrobats of the insect worldResearchers are using super slow-motion footage to reveal the secrets of the most acrobatic insects
VIDEO: 'Irreversible change' to sea life from CO2A major report warns that life in the seas will be irreversibly changed unless CO2 emissions from industrial society are drastically cut.
VIDEO: 'I feel like I can fly forever'A solar-powered plane that is attempting to cross the Pacific Ocean is encountering its first weather front.
VIDEO: The blind birdman of BrazilJuan Pablo Culasso has been blind since birth but he has become one of the best "birdwatchers" in South America.
VIDEO: Ice lollies to keep zoo animals coolZoo animals across Europe are being fed frozen treats to keep them cool and hydrated during the current heatwave.
VIDEO: Leap second: What does it mean?Midnight will come later tonight, as for the first time in three years, an extra second is added to the official time set by atomic clocks.
VIDEO: World's smelliest plant blooms in EdinburghOne of the world's largest and smelliest flowers has blossomed for the first time in Scotland.
Can you prescribe nature?Science closing in on link between nature and well-being
Bloodhound Diary: November date for debutMeasuring loads on a car that is travelling at supersonic speeds
Peeking into the brain's filing systemWhere do your memories live?
In pictures: Lightning illuminates UKThe best images from Friday night's thunder storms
Robots on the marchRobots move into homes and the workplace
'Circademics' get serious about circus'Circademics' get serious about the circus





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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/

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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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