Research RandomizerSave
A free web-based service that offers instant random sampling and random assignment for researchers. Also has a user-friendly tutorial for students. http://www.randomizer.org/
Second MomentSave
Academic research and resources for industry analysts and businesses interested in applying the latest statistical and analytical tools and technology. http://www.secondmoment.org/
Statistical Methods for Rater AgreementSave
Resources for researchers who want to analyze data on agreement among raters or diagnostic methods. Includes raw agreement indices, kappa coefficient, weighted kappa, latent class and latent trait models, and tetrachoric and polychoric correlations. http://ourworld.compuserve.com/homepa...