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<p>Yes, it is not visible how many of the students are double majors, and the career survey includes them in each of their majors.</p>
<p>However, it is worth noting that the “less math” Economics 100A and 100B courses typically have about three times the enrollment of the “more math” Economics 101A and 101B courses. It seems rather likely that most or all of the economics majors doubling with math or statistics are doing the “more math” courses, so it is unlikely that more than a quarter of economics majors are doubling with math or statistics.</p>
<p>Oh, and your proposed schedule: four math or math-like courses should be fine if you like math and are good at it, but it can be scary to those who do not like math or are not good at it.</p>