<p>"Where did you get the 2400 out of 8335 number?</p>
<p>I didn’t come up with the number, but I think the poster got it about right. I believe that about 1200 were accepted EA. 3600 (historical number accepted overall, from the UChicago website) - 1200 = 2400. The denominator is, I believe, RD applications + deferred EA’s.</p>