Balanced Scoring for NBA teams can be measured by using the Herfindahl Index (HHI).
HHI calculation for each team:
(1) divide each player’s points scored by the total number of points scored by the team,
(2) square that result for each player,
(3) sum those squares.
(1) divide each player’s points scored by the total number of points scored by the team,
(2) square that result for each player,
(3) sum those squares.