this is a question regards to sports economy, thank you for answering

2. PER ("Player Efficiency Rating") is a measure of production in basketball that combines various box score statistics to give a measure of a player's on-court impact. It was calculated for 354 players who played at least 400 minutes during the 2019-20 season. In the following regression, I regressed team win% in 2019/20 on . team PER (summed across all the players on a team, and adjusted for games played) . total number of players on a team ("pcount") for whom PER is available. There are 30 NBA teams in the sample. The results are as follows