A New York Times article argued that one reason many students do not graduate from college within 6 years of enrolling is that they choose to “not attend the best college they could have” [18]. For example, many students with a 3.5 high school grade point average could have gone to the University of Michigan Ann Arbor, which has an 88%

graduation rate, but chose instead to go to Eastern Michigan, which has only a 39%

graduation rate.

a. What flaws do you see in the implication that these students would have a better chance of graduating if they went to the University of Michigan instead of Eastern Michigan?

b. What kind of data would we need to draw a valid conclusion?