Ranking Systems for D1 College Hockey (2001-2002)

See also

• Last year's rankings
• The NCAA Selection Procedure
• You Are The Committee, an interactive run through the selection process (also available in a versatile self-service hypothetical interface)
• A Proposed Modification to the NCAA Selection Criteria

Comparison Between Rankings

The following table lists the 59 teams eligible for the NCAA Division I Men's Ice Hockey Tournament along with their rankings according to several rating systems, described below.

Record

A team's winning percentage (Pct) is calculating by adding its wins to half its ties and dividing by the total number of games played. I.e., a tie counts as a half a win and half a loss, which is true for all the rating systems considered here.

RPI

The Ratings Percentage Index, a linear combination of a team's winning percentage (35%) with the winning percentages of their opponents (50%) and their opponents' opponents (15%), which is the most important of the NCAA's selection criteria. More information can be found on our RPI page.

KRACH

Ken's Rating for American College Hockey is an application of the Bradley-Terry method to college hockey; a team's rating is meant to indicate its relative strength on a multiplicative scale, so that the ratio of two teams' ratings gives the odds of each of them winning a game between them. The ratings are chosen so that the expected winning percentage for each team based on its schedule is equal to its actual winning percentage. The Round-Robin Winning Percentage (RRWP) is the winning percentage a team would be expected to accumulate if they played each other team an equal number of times. More information can be found on our KRACH page.

PWR

The PairWise Rating is determined by performing PairWise Comparisons (PWC) according to the NCAA's selection criteria between all teams with winning percentages at or above .500 and totalling the number of comparisons each team wins. More information, including a breakdown of comparisons won and lost according to criteria, can be found on our PWC/PWR page.

KPWR

The KRACH-modified PairWise Rating is analogous to the PWR, except that comparisons are performed using a modified set of criteria which use the KRACH ratings to take into consideration the strength of a team's opponents. More information, including a breakdown of comparisons won and lost according to criteria, can be found on our KPWC/KPWR page.