You can find stats for all Econ grads here:
http://www.ncf.edu/uploads/Q8/L5/Q8L...cs-summary.pdf
...and Math:
http://www.ncf.edu/uploads/f4/h0/f4h...cs-summary.pdf
As far as the Math and Econ departments go, I can't tell you a lot other than I know they aren't the strongest programs at NCF. I don't think any of the departments at NCF are really lacking in any way other than some of the humanities, but it looks like the Mathematics department is the stronger of the two (judging from the charts above, not personal experience).
However, in general, NCF is well known for the large number of students that go on to graduate school. Just by graduating, you have practically everything graduate schools look for in candidates (senior thesis, oral bacc defense, independent study - research, internships, etc...).
Also, here are the links to the Econ and Math department pages. You can click on "Area of Concentration Requirements" on the right hand side under "Quick Links" to see what sort of classes you would have to take and see some sample theses.
New College of Florida New College of Florida
Hope that helps!