The Aikman Efficiency Ratings measure offensive and defensive performance using a combination of seven key statistics identified by Troy, and then measured against league norms (and extremes) established over the last 10 years. An offense or defense performing exactly at league norms in all categories will achieve a score of 75. The better the offense or defense, the higher the score on either scale.
It will take a truly exceptional unit to score more than 90 during an entire season on either the offensive or defensive scale. Higher scores are possible in individual games.
The seven categories measured are:
20% Adjusted Points -- Total Points Scored or Allowed minus Points on Returns and Safeties
20% Turnovers
20% Red Zone Efficiency -- Measured by Percent of Possible Points
10% Yards Per Play -- divided into Yards Per Rush
10% Yards Per Pass -- includes yards on plays involving sacks.
10% First Down Achievement
10% 3rd Down Conversion Percentage
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