Points in soccer work as follows: each goal is 2 points and each assist is 1 point
Simply track the number of minutes the offensive player plays as well as the number of points he or she accumulates and divide the total number of points by the number of minutes the player has played.
This will yield the number of points per minute for a particular player. One reason this measure is important is that players who may not be getting much playing time actually may be yielding more efficient results for the team than others who may be getting a lot of playing time. Of course this measure is subject to level of the opponent as well as other factors, but it is a good measure to use for the offensive players on a team to see who is most efficient.
The reason to use total number of points rather than just goals as some will track is that it encourages the team to be more important than the individual statistics. A player can receive a high measure by both scoring and assisting others.
Once again the ratio is: Total Number of Points Accumulated/Total Number of Minutes Played