It’s all simple math.
I choose to work with Dean Oliver’s technical version of the possession formula.
Games Played (GP):
Number of games a team has played.
Number of wins.
Number of losses.
Number of possessions a team generates per 40 minutes.
Offensive Rating (OffRtg):
Number of points a team scores per 100 possessions.
Defensive Rating (DefRtg):
Number of points a team allows per 100 possessions.
Net Rating (NetRtg):
Describes how many shots from near-distance a team takes compared to their overall number of field goal attempts.
The higher the number the more shots the team takes from inside.
Describes how many mid-range shots a team takes compared to their overall number of field goal attempts.
The higher the number the more shots are long two-pointers.
Describes how many three-pointers a team takes compared to their overall number of field goal attempts.
Effective Field Goal Percentage (eFG%):
Adapts for the higher value of a 3-point shot (as it gives a higher total of points).
Offensive Rebound Percentage (OREB%):
Percentage of total own missed field goals a team grabs.
Defensive Rebound Percentage (DREB%):
Percentage of total opponent missed field goals a team grabs.
Total Rebound Percentage (TREB%):
Percentage of total available Rebounds a team grabs.
Assist Percentage (AST%):
Percentage of a team’s made field goals that were assisted on.
Turnover Percentage (TOV%):
Number of Turnovers a team produces per 100 possessions.
Free-throws per Game (FT/G):
Number of free-throws a team takes in a game on average.
Free-throw Rate (FTr):
Number of free-throws a team makes for every field goal attempt they take.
Last five minutes of the fourth quarter or overtime when neither team leads by more than five points.
“Games Played” in the Stats table include every game such a situation has appeared for the given team, no matter how long the game was within those 5 points.