Statistical test decision tree app?
One of ideas that’s been bouncing around in my head during graduate school is making an app that helps decide which statistical design is most appropriate for a given problem. For instance, imagine a physician/researcher wants to determine whether the outside temperature had an relationship with the likelihood that his patients would live or die on the surgery table. (A silly example, I know, but it is just an example.) He could likely determine that what he’s really interested in is whether the patient dies (outcome), as determined by another variable, temperature (predictor variable). A simple app might be able to point him to logistic regression. If he knows how to do one, great! If not, the conversation with the statistician would likely go more quickly.
So, what I’d like to know is what people think about designing an iOS or Google Chrome app that would be a kind of “decision tree” for arriving at the appropriate analysis. I imagine a Google Chrome app could even have the “leaves” of the tree be screen casts of how to perform the analyses in R. This exercise would be a good one for me, as I am still in my statistical training, and I believe that many people would pay $0.99 if the app worked very well.