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<p>That is an incorrect assumption. </p>
<p>If Duke had accepted 50% of its ED applicants for the Class of 2013, it would have accepted 240 students more. Had this happened, they probably would not have to admit more than 150 students from the waiting list. However, does this change the number of admitted students? </p>
<p>Now, had they admitted 790 students in ED versus 550, would Duke have admitted fewer than the 3,672 they admitted in RD. Remember Duke would need about 900 to 1000 students in RD. Considering the 157 students admitted from the waiting list, it is very logical to conclude that Duke under-admitted in its RD cycle. </p>
<p>What would the yield be with a 50% admit in ED and essentially the same rate in RD. Or are you suggesting that they would have admitted 240 fewer students, namely 3,430 students? </p>
<p>Either way, it does not change much that Duke’s yield for RD was about 33% in 2013, and that 200 more students in ED would not change much as all, especially since Duke filled the class with using a large waiting list, a very high yield crutch if there is one!</p>