Net-based Statistics Course and Calculators

While helping out a friend who had a small analytics problem on hand, I bumped into this nifty set of forms-based statistical calculators hosted at Vassar College. Those also a companion interactive textbook to help you figure out what they are doing, and why, and when you should use them.

This is scaled for student tutorial problems, but as in the case I was working on, there are a lot of useful 'real world' problems that are naturally at that scale and don't warrant the application of high end products like SAS. Consider this kind of thing as an alternative to the 'Excel he**' approach of trying to bend a tool into analytics applications it wasn't designed for. (Also take a look at Dabble for low-rent analytics usage.)