Approximate Value is the metric which is an estimate of a player’s value, making no fine distinctions, but, rather, distinguishing easily between very good seasons, average seasons, and poor seasons.
Credits Formula = (Points)+(Rebounds)+(Assists)+(Steal)+(Blocks)-(Field Goals Missed)-(Free Throws Missed)-(Turnovers)
AV Formula = (Credits(3/4) )/21
Alternative method shall be assigned according to the following rules shown here
Before the ’73-74 season, steals, blocks and turnovers weren’t kept as official stats. In the credits formula, those stats are just omitted as they tend to cancel each other out to some degree when included anyway.