Pass efficiency is an enigmatic formula that tries to combine various statistical measures into a meaningful whole. The formula is:
Pass Efficiency = Completion% + (8.4 * YdsPerAttempt) + (330 * TDsPerAttempt) – (200 * INTsPerAttempt)
On average, completion percentage and yards per attempt account for 93% of the total pass efficiency measure. If teams can maximize these aspects of their passing game, they will win a very high percentage of the time. For example, since 2001, BYU is 51-2 in games where they completed at least 62% of their passes and averaged at least 7.4 yards per attempt, as shown below: