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Sigmaplot Software Inc provides award winning software, services and solutions for statisticians and the entire scientific community.

How to use simple machines to investigate a very complex one

Education projects with a focus on effective pedagogies, geoscience education, community organization, workshop leadership, digital libraries, website development and program and website evaluation

SigmaPlot, free download. SigmaPlot 12.1:.

OriginLab produces professional graphing and data analysis software for scientists and engineers. Our products are designed to be easy-to-use, yet have the power and versatility to provide for the most demanding user.

This on-line journal provides education professionals access to refereed articles that can have a positive impact on assessment, research, evaluation, and teaching practice, especially at the local education agency (LEA) level.

This site provides information to help SAS, SPSS and Stata users learn the R language.

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MedCalc statistical software for biomedical research, including ROC curve analysis, method comparison and quality control tools. Free trial available.

News and resources for research on sport, exercise, and physical performance