I was searching through CMU's common data (its at their website) to find out more about the school, when I came across a rather strange fact: their ED acceptance rate was 23% (226/995), even though the overall rate was 28% (6259/22356). Why did that happen??
Shouldn't the ED rate be higher, due to guaranteed yield (goodness, it's low enough at CMU) and demonstrated interest? Can anyone explain this?