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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...

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...

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.

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

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Random Number Generator provides free, custom random numbers for the lottery or games. Get lucky in Lotto with RandomNumbergenerator.com

Statistics help and resources for students and teachers

The Institute for Advanced Analytics at North Carolina State University (NCSU), Master of Science in Analytics (MSA) degree program, Professor Michael Rappa

Indiana University is a leading research and teaching institution and one of the best values in public education according to Kiplinger