| 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 |
| 'Microplastic' threat to shores | Microscopic plastic debris from washing clothes is accumulating in the marine environment and could be entering the food chain, a study warns. |
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| More uses for 'miracle material' | Graphene, often described as a "miracle material", can be used to distil alcohol, according to a new study in the Science journal. |
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| Anti-matter set for gravity test | Researchers prepare pairs of matter and anti-matter particles in a bid to finally resolve whether anti-matter repels normal matter in a kind of "anti-gravity". |
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| Planting push for jubilee woods | Organisers of a prject to create a series of new woods to mark the Queen's Diamond Jubilee hope to plant one million trees in one month. |
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| 'Invisibility cloak' breakthrough | For the first time researchers achieve the "cloaking" of a three-dimensional object to make it invisible as viewed from any angle. |
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| First report on UK climate impact | Climate change this century poses both risks and opportunities, according to the first comprehensive government assessment of its type. |
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| 'Starbursts' yield cosmic giants | Astronomers say that areas of frantic star formation in the Universe's early days fed supermassive black holes, and led to the largest galaxies we see. |
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| Native dog breeds risk extinction | One of Britain's oldest native dog breeds - the English setter - is at risk of extinction, says the UK Kennel Club. |
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| Government loses appeal on solar | The UK government has failed in an appeal against a decision which blocked its attempts to reduce solar power subsidies. |
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| AUDIO: Gingrich's moonbase 'electioneering' | Professor Andrew Coates of UCL's Mullard Space Science Laboratory analyses how realistic it would be to implement calls from the US Republican presidential candidate Newt Gingrich for a permanent base on the moon. |
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| 'Peak timber' concerns in tropics | Current tropical timber harvesting practices are not sustainable and nations should consider the implications of "peak timber", a study suggests. |
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| Top spots for garden birdwatch | Some of the beautiful birds to look out for to help assess the status of the nation's feathered friends during this year's big garden birdwatch. |
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| Asteroid makes near-miss fly-by | An 11m-wide asteroid passed within 60,000km of Earth on Friday, making it one of the 20 closest recorded approaches to our planet. |
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| Dogs 'higher Lyme disease risk' | Ticks that can transmit Lyme disease may be more prevalent in the UK than realised, say researchers who have found out how many pet dogs harbour them. |
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| Oldest dinosaur nest site found | A nesting site for dinosaur eggs found in South Africa is 100 million years older than the previous oldest site, palaeontologists say. |
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| Strong solar storm lashes Earth | Scientists say the Earth is being bombarded by radiation from the strongest solar storm since 2005, with effects that could last until Wednesday. |
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| Fears over new livestock illness | Farmers in two English counties where a new livestock disease has been detected say they are concerned for their animals. |
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| Tartan marks pandas' zoo arrival | A special tartan commissioned to mark the arrival of two pandas in the UK is unveiled at Edinburgh Zoo. |
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| Stem cell eye remedy 'seems safe' | Early results from the world's first human trial using embryonic stem cells to treat diseases of the eye suggest the method is safe, say researchers. |
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| Suriname team find 46 new species | Three-week research expedition to Suriname documents 1,300 species, including 46 believed to be new to science. |
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| Arctic freshwater bulge detected | UK scientists use radar satellites to measure a huge dome of fresh water that is developing in the western Arctic Ocean. |
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| Pilot whales beach in New Zealand | A group of 90 pilot whales beach on a spit at the northern tip of New Zealand's South Island - the second incident in the area this month. |
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| UK woman crosses Antarctica solo | Briton Felicity Aston has become the first woman to cross Antarctica alone. |
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| Plans for new sea energy device | A Devon inventor's electricity from seawater generator could be sited at 200 points around the UK coastline. |
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| Bees 'could deter park vandals' | Heritage park bosses could use bees to act as a deterrent to stop vandal attacks on historic buildings. |
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| 'Record year' for ivory seizures | More elephant tusks were seized in 2011 than in any year since 1989, when the ivory trade was banned, international wildlife trade group Traffic says. |
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| National wildlife survey begins | The wildlife charity RSPB appeals to the public to join its annual Big Garden Birdwatch this weekend. |
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| Odd primates you may have never heard of | Cute primates slow lorises are in decline as they are being traded illegally as pets, but there are other endangered primates you may never have heard of that are also vanishing. |
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| VIDEO: Bats find shelter in Israeli bunkers | Bats are finding a surprising haven in abandoned Israeli bunkers, researchers say. |
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| AUDIO: Bus-sized asteroid to pass by Earth | Astronomers are watching for an asteroid the size of a double-decker bus which will pass within 70,000km of Earth on Friday. |
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| VIDEO: Snow leopards steal camera trap | A snow leopard is caught in the act as it steals a camera. |
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| VIDEO: Child's toy launched into space | While America is running down its manned space programme - further north - two Canadian students have shown that flying into space does not always have to be rocket science. |
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| VIDEO: Air pollution alert first for Scotland | Scotland is to become the first part of the UK to offer a pollution alert system which could be incorporated into weather forecasts. |
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| VIDEO: Supply rocket blasts off for ISS | A rocket carrying supplies for the International Space Station has blasted off from the Baikonur Cosmodrome in Kazakhstan. |
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| VIDEO: Time lapse footage of northern lights | The skies above Lapland, Finland, have been lit up with a spectacular display from the northern lights. |
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| VIDEO: Solar storm causes lights and some disruption | The most intense solar storm to have been recorded in the past six years has been responsible for the spectacular Northern Lights show witnessed across many northern areas of earth this week. |
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| Fishing's global footprint | Mapping fishing's global footprint - and deciding what to do about it |
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| UK space sector 'on the up' | UK space sector is feeling good and looking good |
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| Orchid's bloom captured on camera | Time-lapse photos see orchid coming into flower |
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| Newt's long shot at the Moon | Mark Mardell assesses Newt Gingrich's Moon vision |
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| Making Bangkok flood-proof | Bangkok's canal-dwellers anger at eviction plans |
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| Pictures: Fantastic new images of Mars | New images of the Red Planet's diverse landscapes |
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| How do Australians respond to shark attacks? | How do Australians respond to shark attacks? |
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