I want to determine the difference between distributions. When would I use kl-divergence and when would I use rmse? It seems like both equations reduce deviation to a single number, but couldn't find a comparison between them.
posted by lpctstr; on Nov 4, 2009 - 5 answers

Do standardized tests (SAT, GRE, LSAT, etc.) use randomly sorted answer choices? [more inside]
posted by bluejayk on Dec 4, 2007 - 15 answers

[IHaveAnExamTodayFilter] I am a graduate student in social work. Today I have a midterm that will include questions on a few things I just cannot understand despite lectures, notes and a glossary. They include confidence level, confidence interval, standard deviation and margin or error. Can you explain this stuff to me, preferably in relation to one another? [more inside]
posted by sneakin on Jul 12, 2007 - 19 answers