Hi! I'm sharing the following because I want to find out if it makes sense to other people.
Motivation: I want to compute a metric for overall GRE performance.
Assumption: I assume that there is no correlation between Verbal, Quantitative, and Analytical Writing scores. If there were, that would be a serious flaw of the GRE General Test.
Definitions:
Let V = percentage below on the Verbal section expressed as a decimal, that is: 0.0 for 0%, up to 1.0 for 100%
Let Q = percentage below on the Quantitative section expressed as a decimal, that is: 0.0 for 0%, up to 1.0 for 100%
Let AW = percentage below on the Analytical section expressed as a decimal, that is: 0.0 for 0%, up to 1.0 for 100%
Proposition: Your overall performance on the GRE General Test is given by:
(1.0 - V) * (1.0 - Q) * (1.0 - AW)
For example, I scored V:155 (69%), Q:155 (58%), AW:4.0 (59%) on my most recent attempt on the GRE.
So, my overall performance on the GRE is:
(1.0 - 0.69) * (1.0 - 0.58) * (1.0 - 0.59) = 0.053382, or 5.3382%
In other words, overall, I finished in the top 5.3382%.
Criticism?
Thanks!
/James/