| 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, Harrell-Davis Quantiles, Bivariate KDE, Correlation Matrix, Stem-and-leaf plot, Explorative Data Analysis
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| Regression Software | This 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).
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| 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, r-Distribution, Rectangular (Uniform), Student t, Triangular, and Weibull.
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| Statistical Hypothesis Testing Software | Offers statistical testing of a variety of hypotheses: Population Mean, Mean (critical value, p-value, type II error, sample size), Skewness/Kurtosis, Quasi Random-Walk
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| 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.
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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.
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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.
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| 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).
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| 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.
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| R modules | Anyone can create, maintain, and publish R-based modules (subject to editorial acceptance) and make them freely available within the Wessa.net framework.
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| 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.
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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.
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| Sample Size Software | (sample size, sample accuracy, confidence interval)
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| Factor Analysis | (Factor Analysis, Principal Components)
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| Clustering Software | (Agglomerative Nesting, Hierarchical Clustering)
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| 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.
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| 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...)
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| NEWS FEED from BBC News : Science and Nature |
| Freshwater turtles 'in decline' | More than a third of freshwater turtle species are now threatened with extinction, Conservation International says. |
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| Ancient Greeks saw Halley's comet | A celestial event seen by the ancient Greeks may be the earliest sighting of Halley's comet, new evidence suggests. |
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| Scan to 'track brain development' | Scientists say they can quickly and accurately map a child's brain development using an MRI machine and a maths programme. |
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| Invasive 'killer' shrimp found in UK | An invasive species of predatory shrimp has been found in the UK for the first time. |
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| Dino clue to 'earliest feathers' | Palaeontologists uncover a new dinosaur with what may be the earliest evidence of feathers. |
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| Whale rescue 'could take weeks' | Animal welfare experts say it could take weeks to free a humpback whale caught up in ropes off Shetland. |
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| New evidence for rare black hole | Researchers say they may have found further evidence for the existence of an unusual type of black hole. |
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| Fungus threatening film history | A fungus that 'eats' cine film could cause irreversible damage important archive films which hold a record of British social history. |
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| University research focus 'wrong' | Science Minister David Willetts says the research-teaching balance in universities has 'gone wrong', after defending cuts to science research. |
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| Heat pumps 'need tighter rules' | Domestic heat pumps need to be subject to tighter regulations in order for them to deliver widespread energy savings, a report suggests. |
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| EU tightens rules on lab animals | The EU agrees on new rules to reduce the number of animals used in lab experiments and tighten controls over such procedures. |
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| Next-generation telescope may spot alien oceans | The next generation of telescopes could reveal the presence of oceans on planets beyond our Solar System. |
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| Efforts to catch squirrel 'stowaway' on tour boat | Efforts are to be made to capture a red squirrel found on a wildlife holiday cruise boat. |
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| Secrets of good dancing uncovered | Scientists carry out the first rigorous analysis of dance moves that make men attractive to women. |
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| Four admit animal lab hate plot | Four animal rights activists admit waging a hate campaign against people linked to a Cambridgeshire animal testing laboratory. |
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| Whale skeleton on display in London | A huge whale skeleton found in the River Thames goes on display in London's Docklands. |
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| Tiny solar cells fix themselves | A mix of chemicals borrowed from plants with tiny tubes of carbon can spontaneously create tiny, self-repairing solar cells. |
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| Gravity probe 'caught the cold' | Europe's gravity probe, Goce, is returned to health after being knocked offline because some onboard systems got too cold as the satellite circled the Earth. |
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| Insect brains to fight MRSA | Cockroach and locust brains are a rich source of antibiotics powerful enough to tackle MRSA, researchers say. |
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| BP spreads blame over oil spill | A BP report says "a series of failures" by BP and its contractors were to blame for the massive Gulf of Mexico oil spill. |
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| 'No climate link' to African wars | A study suggests climate change is not responsible for civil wars in Africa, challenging widely held assumptions. |
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| Video to assess Wave Hub impact | High definition (HD) video is being used to assess how wave energy devices will affect the ecology of coastal areas. |
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| Inbred bees 'facing extinction' | Some of the UK's rarest bumblebees are at risk of becoming extinct as a result of inbreeding, research suggests. |
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| Huge growth at largest wind farm | A massive expansion is to take place at Europe's largest onshore wind farm in East Renfrewshire. |
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| Blair in climate inaction warning | Former UK Prime Minster Tony Blair warns world leaders they may pay a heavy price in history if they fail to tackle global warming. |
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| Gorillas 'play tag like humans' | Great apes play tag in similar way to humans, an international team of scientists finds. |
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| Hawking: "We must inspire young people" | Professor Stephen Hawking explains why investment in scientific and academic excellence is crucial to Britain's future. |
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| Fat orang-utan goes on a diet | An overweight orang-utan, who was Britain's fattest primate, has been put on a strict new diet. |
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| The kit for racing across Antarctica | A team of explorers and scientists will be soon setting out for Antarctica for what they hope will be the fastest land crossing of the continent ever. |
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| What happens when food rots? | Mould, flies, and maggots - watch what happens when food is left to rot |
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| Town's aim to become self sufficient | Todmorden, in West Yorkshire, is striving to become self sufficient by growing fruit and vegetables and keeping livestock. |
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| Cable: Setting the bar on science research | Business Secretary Vince Cable says "the bar will have to be raised" on science funding |
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| Panda twins delight Japanese zoo | New-born twin giant pandas made their first public appearance at a zoo in Japan on Friday in Shirahama. |
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| Mighty mouse study on St Kilda | Researchers begin a three-year study to uncover the secrets of St Kilda's super-sized field mice. |
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| Energy House | Researchers embark on 'first of its kind' project |
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| Giant's mouthful | Giant spiral galaxies caught "feasting" on neighbours |
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