Polls Explained: Harris, Coaches, BCS

I. Harris Interactive Poll (1/3rd)
Replaces the AP Poll. The first poll will be released September 27, then weekly through December 6. A team's score in the Harris poll will be divided by 2,850, which is the maximum number of points any team can receive if all 114 voting members rank the same team as Number 1. Example: 2,850 / 2,850 = 1.0. If a team receives a total of 114 voting points, an average of 25th place, their BCS quotient of this component would be .04. (1.0 / 25 = 0.04).

II. Coaches Poll (1/3rd)
A team's score in the USA Today poll will be divided by 1,475, which is the maximum number of points any team can receive if all 59 voting members rank the same team as Number 1. Example: 1,475 / 1,475 = 1.0. If a team receives a total of 59 voting points, an average of 25th place, their BCS quotient of this component would be .04. (1.0 / 25 = 0.04).
(Better understanding the polls: In both human polls, voting members fill out their own top 25 rankings ballot. Each team receives 1-25 points in reverse order of the way they are ranked. The 25th place team on each ballot receives 1 point, 24th place gets 2 points, 23rd receives 3 points... first place receives 25 points. This inverse point order is also applied to the computer rankings.
In the Harris Interactive College Football Poll and USA Today Coaches Poll, a team will be evaluated on the number of voting points it receives in each poll. The number of actual voters, which can vary and has varied in the past, is figured into the computation on a weekly basis in stating each team's percentage of a possible perfect score.

III. Computer rankings (1/3rd)
The computer rankings percentage is calculated by dropping the highest and lowest ranking for each team and then dividing the remaining total by 100, the maximum possible points. (Example: the 6 rankers have Team A ranked 2, 3, 3, 3, 3, and 4. Take away the 2 and 4 which leaves an average of 3rd place. The BCS quotient of this component would be 0.92. (23 / 25 = 0.92).

Simplifying the formula
The percentage totals of the Harris Interactive Poll, USA Today Poll, and the computer rankings are then averaged. The teams’ averages are ranked to produce the BCS Standings.
A = Team is No. 1 in Harris Poll with all voters = 1.000
B = Same team is No. 1 in Coaches Poll with all voters = 1.000
C = Same team is No. 3 in Computer Rankings = 0.920
Result: (A+B+C)/3 = Total Score of 0.973

http://www.collegefootballpoll.com/bcs_explained.html

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