The goal of the computer rankings is to measure which teams had the best seasons. If you are looking to see who is statistically the best team regardless of wins and losses, then the power rankings are the rankings you should look at. However, the reality is teams are going to over perform and under perform and at the end of year, those things matter regardless of how powerful a team may seem. Therefore, teams with lower power scores are often going to find themselves above teams with higher power scores, and vice versa.
The basic formula for these rankings is to award teams points and take away points from those teams based on the power rating of the opponents. While the overall strength of schedule gives you the potential, the final score is based on who the team won and lost against, not a base score of win% vs sos as some computer rankings may do, which leads to problems when it comes to properly weighting these events.
If team A beats team B and team B has a power of 100.00, then team A is awarded 100 points for the game.. If team A beats team C and team C has a power ranking of 55.34, then team A is awarded 55.34 points for the week. The higher power rating of the team, the more valuable it is.
Likewise, losing to a team is also weighted based on the power of a team. The amount of points lost for a week is 100 minus the power score of the opponent. If a team A loses to team B and team B has a power score of 100 points, then 0 points are lost that week for team A. If team A loses to team C and team C has a power score of 55.34, then team A loses 44.66 points for the game. Who a team loses to matters.
Future games which have yet to be played use the computer predictions and awarded half the points for and against a team.
Margin of victory is not directly used in these rankings. However, it is a factor in determining the power rating of a team and has indirect influence.
All FCS teams are automatically worth 0 points. FBS teams have no business playing FCS teams, and winning will give a team a maxium score of 0 points, while losing is a full -100. In addition, FCS teams count as a bye week for the team.
Weekly points are tallyed up and then averaged across the amount of games as to not give teams who play extra games an unfair advantage. Final score is a mixture of the average score and the power rating.
If the team has beaten the team ranked above it, then it will be move ahead of that team even if the score is lower. This process is repeated until there is no longer any movement, so teams are capable of jumping up more than 1 ranking. In the event the teams have played more than once in a season, only the most recent game is used.
These computer rankings are in no way associated with, or used by the BCS rankings system. The forumla used was created by a fan of the game who wants to look at all teams in an unbiased manner and for no other purpose.
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