| 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 |
| 'Superflares' from stars counted | Nasa's Kepler space telescope provides new insight on the colossal explosions that can occur in the atmospheres of some stars. |
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| UK retains strict animal test law | The UK says it will retain stricter animal testing standards than required by a new European Union Directive. |
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| Councils 'must lower emissions' | Local authorities across the UK should have a statutory duty to combat climate change, government advisors recommend. |
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| Citizen science yields moth data | About 13,000 moths are captured and recorded by citizen scientists in a project described as the largest of its kind. |
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| Whales can adjust their hearing | Whales that use sound to navigate are able to adjust the sensitivity of their hearing to protect their ears from loud noises, say scientists. |
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| Robotic arm controlled by thought | Two patients in the US paralysed from the neck down are able to control a robotic arm using their thoughts alone. |
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| Tidal turbine 'performing well' | A subsea turbine which uses tidal power to generate electricity has successfully completed initial tests off Orkney. |
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| UK climate fix balloon grounded | A pioneering project to test a climate "technical fix" is postponed and maybe cancelled due to problems with patents and regulations. |
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| Escapee penguin 'found' in Tokyo | A young penguin which escaped from Tokyo's Sea Life Park has reportedly been spotted swimming in waters around the Japanese capital. |
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| Action urged on city climate risk | Urban areas need additional capacity to adapt to the range of threats posed by climate change, such as flooding and rising temperatures, studies show. |
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| Cameron hears Green Deal concerns | Downing Street is about to review the government's flagship Green Deal energy-saving programme after warnings that it is liable to fail. |
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| Subways share universal structure | A study of the world's largest subway networks shows they share a number of mathematical features, irrespective of their age or location. |
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| Trawler catches 'biggest oyster' | A Shetland trawler catches what experts believe could be the largest oyster ever found in the UK. |
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| Rio hotels agree summit price cut | The Brazilian government reaches a deal with Rio de Janeiro hotel owners to cut spiralling room prices ahead of a major UN summit in the city. |
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| Cutting pollution 'helps hearts' | Cutting air pollution has an instant impact on heart health, experts believe, after reviewing studies of the 2008 Beijing Olympics. |
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| Milestone for wi-fi with 'T-rays' | Researchers smash a record for wireless data transmission in the terahertz band, an uncharted part of the electro-magnetic spectrum. |
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| Chemicals 'damage male fertility' | A study by Scottish researchers suggests chemicals routinely found in the environment could be damaging male fertility. |
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| Viruses used to power tiny device | A US team of researchers develops a way to generate electricity using viruses. |
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| Paralysed man moves hand after op | A paralysed man has regained limited use of his hand after pioneering surgery to bypass damage to his spinal cord. |
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| Amber preserves pollen carriers | What may be the earliest direct example of insect pollination of plants has been identified by scientists in 100-million-year-old amber blocks from Spain. |
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| Elgin gas leak 'has been stopped' | The gas leak from the Elgin platform in the North Sea has been stopped, oil firm Total says. |
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| Apple trees in Highlands mapped | The planting of apple trees could be on the rise in the Highlands, according to the maker of a new map. |
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| Seabed test mimics carbon release | Scientists begin a month-long experiment in Scottish waters to study the impact of a possible leak from an undersea carbon dioxide storage site. |
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| Fawns use predator 'escape plan' | Survival of the fittest among baby deer |
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| Airlines report emissions to EU | The vast majority of airlines are conforming to EU rules on reporting carbon dioxide emissions, despite a number of protests and lawsuits. |
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| Work on The Shaft to be sped up | Plans are to be accelerated to deal with one of the most controversial areas of the Dounreay nuclear site. |
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| Nature protection 'must improve' | Environmentalists say leaders at June's Rio+20 summit must urgently step up nature protection, as a report confirms a 30% fall in wildlife since 1970. |
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| Nature and culture loss 'linked' | A study by US researchers highlights a link between the loss of biologically rich areas and a decline in linguistic and cultural diversity. |
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| Crows know familiar human voices | Crows recognise and respond to familiar human voices and the calls of other bird species, according to researchers. |
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| VIDEO: Soyuz spaceship docks at ISS | A Soyuz spacecraft has successfully docked with the International Space Station. |
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| VIDEO: Wildlife Trusts celebrates centenary | The movement which started the Wildlife Trusts is celebrating its centenary year. |
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| VIDEO: A look at 'wind turbines' of the deep | The latest device to harness the power of the tides is being tested in the stormy waters off Orkney in the far north of Scotland. |
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| VIDEO: Hopes for West Country mining | Contracts giving a mining company ownership of land in Cornwall which it says it needs for new buildings have been signed. |
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| VIDEO: Norway tests carbon capture technology | A hi-tech facility that could unlock the key to eliminating greenhouse gas emissions from power stations has just opened in Norway. |
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| VIDEO: Are billions exposed to unsafe water? | The UN has greatly downplayed the scale of the global drinking water crisis, research carried out by the BBC suggests. |
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| AUDIO: Tweeting to a planet near you | Why is an artist about to sent tweets into space? Nathaniel Stern, associate professor at the University of Wisconsin, and Anu Ojha, Director of the National Space Academy in Leicester, explain. |
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| VIDEO: Flying into the heart of a storm | Scientists have flown through the heart of a turbulent weather system in a bid to understand the causes of heavy rainfall. |
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| Tidal power gets a stormy birth | Scotland's latest bid for tidal power |
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| Wildlife Trusts celebrate 100 years | The UK Wildlife Trusts celebrate their centenary |
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| Big Picture: The Centaur | The best-yet view of the mysterious galaxy Centaurus A |
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| Insect clues crack murder probes | The maggot expert who is being called in by murder police |
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| Inside the mind of the road racer | The psychology of choosing to risk your life |
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| Sticking it where the Sun shines | The Scottish scientists trying to put solar power stations in space |
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| Profile: Sea Shepherd Cpt Watson | Paul Watson, recently arrested environmental campaigner |
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