<p>The primary difficulty I see with the Brown data is that it is sectional. It does suggest strongly that a single 800 is associated with a somewhat greater chance of admissions that a single 750-790. But, we cannot determine more with certainty. </p>
<p>The secondary difficulty I see with the Brown data is the super-scoring issue. Brown currently uses the highest section across all dates submitted. It’s not clear, from the data we have how super-scoring would affect admissions. A student who, for example, scored: 750,800,750 on one sitting and 800, 750, 750 on a second sitting and was admitted, would show up twice in the data, but it is impossible to tell if the the second sitting actually affected the student’s admissions result.</p>