In basketball, effective field goal percentage (abbreviated eFG%) is a statistic that adjusts field goal percentage to account for the fact that three-point field goals count for three points, while all other field goals only count for two points.
[1] Its goal is to show what field goal percentage a two-point shooter would have to shoot at to match the output of a player who also shoots three-pointers.
where: [3] A common criticism of this formula is that shooters with very high percentage success rates, which favor 3 point shots, would arrive at an eFG\% above 100%.
where: The advantage of this second formula is that it highlights the aforementioned logic behind the statistic, where it is pretended that a player only shot two-point shots (hence the division of non-free-throw points by 2).
where: [5] All three equations yield the same result.