The correction factor is employed when a team underperforms or overperforms relative to the power rating predictions. The greater the disparity in the actual to predicted difference increases the amount of correction.

A team receives or loses quality points based on the predicted goal difference of a game. If a team wins, it gets quality points. If a team loses, it loses quality points. This is done so that this factor is not unfairly influenced by the number of games a team plays. The table below explains the number of points. Here is how to verify the quality points:

(1) Determine who is the favorite team and who is the underdog. The "Reg In" column on the ratings page lists the power ratings. Note that 'Reg In' counts only games played within a league (teams listed on the same ratings page) and does not count games played outside a league or state. This power rating is NOT the same as the total power rating, because that value includes out-of-league games, the 10-goal adjustment, the win-loss component, as well as the correction factor. Also note that although a team might have a total power rating greater than an opponent, its 'Reg In' value could be less than that of the opponent.

(2) Determine the predicted goal difference. This value can be found on each team's page and is listed under Table 2 'Goal Differential' in the 'Predicted' column.

(3) Next use the table below to find the correction factor.

Example: Apex defeats East Chapel Hill 18-10 and earns 0.150 quality points. Apex has a national power rating of 79.31, and East Chapel Hill has a national power rating of 75.16. But we don't want the national power ratings, because they are based on all games and other factors. We just want the 'Reg In' power rating, which for Apex is 80.60 and for East Chapel Hill 76.93. These values were found on the North Carolina NCHSWLA ratings page. Now if we examine the Apex team page and go to the second table and look for the East Chapel Hill game, we see that the predicted goal difference was 4. Since Apex was the favorite and won, we go to 'Winning team was the favorite' below and look for 'Predicted Goal Difference was = 04' and find the correction is 0.15.

Winning team was the underdog:
Predicted Goal Difference was <= -00 cor = 0.0250
Predicted Goal Difference was <= -01 cor = 0.0275
Predicted Goal Difference was <= -02 cor = 0.0300
Predicted Goal Difference was <= -03 cor = 0.0325
Predicted Goal Difference was <= -04 cor = 0.0350
Predicted Goal Difference was <= -05 cor = 0.0375
Predicted Goal Difference was <= -06 cor = 0.0400
Predicted Goal Difference was <= -07 cor = 0.0425
Predicted Goal Difference was <= -08 cor = 0.0450
Predicted Goal Difference was <= -09 cor = 0.0475
Predicted Goal Difference was <= -10 cor = 0.0500

Winning team was the favorite:
Predicted Goal Difference was >= 00 cor = 0.0250
Predicted Goal Difference was >= 01 cor = 0.0225
Predicted Goal Difference was >= 03 cor = 0.0175
Predicted Goal Difference was >= 04 cor = 0.0150
Predicted Goal Difference was >= 05 cor = 0.0125
Predicted Goal Difference was >= 06 cor = 0.0100
Predicted Goal Difference was >= 07 cor = 0.0075
Predicted Goal Difference was >= 08 cor = 0.0050
Predicted Goal Difference was >= 09 cor = 0.0025
Predicted Goal Difference was >= 10 cor = 0.0000

Winning Team was neither the favorite/underdog:
cor = 0.025

Losing Team was the underdog:
Predicted Goal Difference was <= -10 cor = -0.0000
Predicted Goal Difference was <= -09 cor = -0.0025
Predicted Goal Difference was <= -08 cor = -0.0050
Predicted Goal Difference was <= -07 cor = -0.0075
Predicted Goal Difference was <= -06 cor = -0.0100
Predicted Goal Difference was <= -05 cor = -0.0125
Predicted Goal Difference was <= -04 cor = -0.0150
Predicted Goal Difference was <= -03 cor = -0.0175
Predicted Goal Difference was <= -02 cor = -0.0200
Predicted Goal Difference was <= -01 cor = -0.0225
Predicted Goal Difference was <= -00 cor = -0.0250

Losing Team was the favorite:
Predicted Goal Difference was >= 00 cor = -0.0250
Predicted Goal Difference was >= 01 cor = -0.0275
Predicted Goal Difference was >= 02 cor = -0.0300
Predicted Goal Difference was >= 03 cor = -0.0325
Predicted Goal Difference was >= 04 cor = -0.0350
Predicted Goal Difference was >= 05 cor = -0.0375
Predicted Goal Difference was >= 06 cor = -0.0400
Predicted Goal Difference was >= 07 cor = -0.0425
Predicted Goal Difference was >= 08 cor = -0.0450
Predicted Goal Difference was >= 09 cor = -0.0475
Predicted Goal Difference was >= 10 cor = -0.0500

Losing Team was neither the favorite/underdog:
cor = -0.025


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