I am thinking of going to graduate school in economics. How should I prepare myself to enter a Ph.D. program?

One of the greatest problems that economics majors have when they go to graduate school in economics is that they have an inadequate background in mathematics. In order to better prepare our students for a good Ph.D. program, the economics department has established joint majors with both the mathematics department and the statistics department. Any student considering a Ph.D. in economics should consider declaring in one of these joint majors. See the bulletin for details regarding these joint majors.
The minimal math background for any prospective graduate student in economics is Calculus I-III, Linear Algebra, a probability course (3000 level or higher) and a statistics course (3000 level or higher).