Predicted Economics, followed closely by Political Science. Actual major was Political Science/History, but I did take some economics courses during college. I'm going back to school for Computer Science anyway, and that's ranked 7th (History is rank 11th, weird).
It might be sophisticated, but I think you need to increase the number of data points you're collecting. Maybe allow us to submit our actual major too, to help train your predictor? (I understand this can allow vandals to sabotage your Clever Surveys though.)
You're right. The College Majors predictor does need more data points. As a matter of fact, with the number of data points it has now, it shouldn't even be allowed to make predictions. The reason it can is that early in this websites history (a few months ago), all predictors had the same threshold of 50 responses (data points) before activating. This was later changed to be based on the predictor itself. With the new system, that predictor would need at least 100 responses.
However, users can actually help train the predictor. The link for that specific predictor is
here. That page can be reached from the predictor page, but maybe I should also have a link on the results page?
The website is designed to be as self sustaining a possible. So users create predictors, train predictors, and use predictors. There are systems in place to prevent "vandalism" as you put it
.
My recommendation though, is that you shouldn't require a login to press the up arrow/down arrow.
This will take a bit of consideration. Honestly, I never really considered it because I can't think of a single website that allows ratings without users logging in. I imagine the main reason websites do this is to discourage fake votes. However, there are other (more effective) methods for that. The other reason I can think of is to encourage better votes. Since users are likely to put more thought into it if they have to create an account first, or are already a member of the website.