:: Free Statistics Software (Calculator)  Webenabled scientific services & applications :: 

All rights reserved. The noncommercial (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 Software  This 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, HarrellDavis Quantiles, Bivariate KDE, Correlation Matrix, Stemandleaf plot, Explorative Data Analysis

 
Regression Software  This is a collection of Regressionbased types of analysis for single and multiple equations: Multiple Regression Equations, BiasReduced Logistic Regression (Firth method), Recursive Partitioning (Classification & Regression Trees), Variancebased Structural Equation Modeling (Partial Least Squares  Path Modeling).

 
Statistical Distributions  Features 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, rDistribution, Rectangular (Uniform), Student t, Triangular, and Weibull.

 
Statistical Hypothesis Testing Software  Offers statistical testing of a variety of hypotheses: Population Mean, Mean (critical value, pvalue, type II error, sample size), Skewness/Kurtosis, Quasi RandomWalk

 
Time Series Analysis (R modules)  Performs Univariate BoxJenkins 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 Plotter  Plots 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 Database  Use 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 modules  Anyone can create, maintain, and publish Rbased 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 BoxJenkins 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 lagbased MACD. Various types of time series analysis tools are available: (Partial) Auto Correlation Function, Spectral Analysis, Variance Reduction Matrix, Standard DeviationMean 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 Examples  This 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, BlackScholes option prices, interest payment, principal payment, number of periods, effective interest, nominal interest, Quasi RandomWalk identification, trading performance statistics, etc...)

 
 NEWS FEED from BBC News : Science and Nature                                                                               

To cite Wessa.net in publications use: Wessa, P. (2016), Free Statistics Software, Office for Research Development and Education, version 1.1.23r7, URL http://www.wessa.net/
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Software Version : 1.1.23r7 Algorithms & Software : Patrick Wessa, PhD Server : www.wessa.net
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