If all of the players on a basketball team had the same height, then the mean height of the players would be equal to that height. To find the mean absolute deviation (MAD) of the players' heights, we would need to calculate the average distance between each player's height and the mean height.
Since all of the players have the same height, the absolute deviation of each player's height from the mean height would be zero. Therefore, the MAD of the players' heights would also be zero.
In other words, if all of the players on a basketball team had the same height, we could use reasoning to find that the mean absolute deviation of the players' heights is zero, since there is no variation or difference between the heights of the players.