rating

Passer rating (also known as passing efficiency in college football) is a measure of the performance of passers, primarily quarterbacks, in gridiron football. There are two formulas currently in use: one used by both the National Football League (NFL) and Canadian Football League (CFL), and the other used in NCAA football. Passer rating is calculated using a player's passing attempts, completions, yards, touchdowns, and interceptions. Passer rating in the NFL is on a scale from 0 to 158.3. Passing efficiency in college football is on a scale from −731.6 to 1261.6.
Since 1973, passer rating has been the official formula used by the NFL to determine its passing leader.Passer rating is sometimes colloquially referred to as “quarterback rating” or “QB rating”; however, the statistic applies only to passing (not to other contributions by a quarterback) and applies to any player at any position who throws a forward pass, not just to quarterbacks.

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