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Research Randomizer -- A Free Tool for Instant Random Sampling and Assignment.

User-friendly introduction to statistics, probability, and survey sampling. Free, online tutorials - a general statistics tutorial and a tutorial tailored to the Advanced Placement (AP) Statistics curriculum. Online tools - statistical tables, probab...

Crie e publique questionários online em minutos e exiba os resultados em forma gráfica e em tempo real. A SurveyMonkey fornece questionários online gratuitos e software de questionário.

YouTube is a place to discover, watch, upload and share videos.

RANDOM.ORG offers true random numbers to anyone on the Internet. The randomness comes from atmospheric noise, which for many purposes is better than the pseudo-random number algorithms typically used in computer programs.

GraphPad Prism is a powerful combination of biostatistics, curve fitting (nonlinear regression) and scientific graphing in one comprehensive program. Easily organize, analyze and graph repeated experiments; pick appropriate statistical tests and inte...

360 Degree Feedback, employee surveys, and other HR survey applications. Online survey software and web based tools for conducting 360 feedback and employee engagement surveys. Online software (SaaS). Fully hosted. Employee satisfaction is only one a...

wikiHow is a wiki based collaboration to build the world’s largest, highest quality how to manual. Our multilingual how to manual has free step-by-step instructions on how to do all types of things.

Official Health Resources and Services Administration Web site of the U.S. Department of Health and Human Services