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Date: | Thu, 3 Dec 1992 15:01:48 CST |
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Since we are discussing ratings this week, I guess it's time to post the
first RPICH of the season. RPICH (Rating Percentage Index for College
Hockey) is my implementation of the RPI ratings that have been applied
to college hockey, basketball, and other sports.
The recipe isn't a secret. Calculate the Winning Percentage (WP) of each
team ((wins*2 + losses*2 + ties) / 2). Now, for each team calculate the
Opponents' Winning Percentage (OWP) by summing the WP of the opponent in
each game (exclusive of games against that team) and dividing by the number
of games. Calculate the Opponents' Opponents' Winning Percentage (OOWP)
for each team by summing the OWP of the opponent in each game and dividing
by the number of games. Finally, RPI = (WP*.2) + (OWP*.4) + (OOWP*.4).
RPI ratings have been used by Division 1 Ice Hockey Committee as a tool for
producing their weekly poll and seeding the teams in the national tournament.
While RPICH is not and has not been supplied to the Committee, it should be
identical to the official ratings.
I am posting the RPICH to the list because I think that fans should be aware
of these numbers, as they apparently have some impact in how teams are seeded
into the tournament. I specifically invite any members of the Ice Hockey
Committee to comment on this, either to me or to the list.
With no further ado, here's the first RPICH of the season:
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rating Percentage Index for College Hockey, compiled by Erik Biever
RPICH is an attempt to rate college hockey teams by objective methods.
The formula is that used as one of the tools for evaluating teams for
the national tournaments in college baseball, basketball, and hockey.
RPICH is calculated by summing each team's winning percentage, the
average winning percentage of its opponents, and the average winning
percentage of its opponents' opponents, multiplied by 20%, 40%, and
40% respectively. Factors such as home ice and margin of victory are
not included. Only the 206 Division 1 games through 11/30/92 are
included.
RPICH IS BASED ON SCORES COMPILED AND CALCULATIONS PERFORMED
INDEPENDENT OF THE NCAA AND ANY AGENTS THEREOF.
Opp OppOpp
G W L T Win% Win% Win% RPICH
1 Maine 10 9- 0- 1 .9500 .5219 .5918 .6355
2 Michigan 11 7- 2- 2 .7273 .6056 .5045 .5895
3 Alaska-Fairbanks 9 6- 3- 0 .6667 .5681 .5410 .5770
4 Miami 12 9- 2- 1 .7917 .5330 .5079 .5747
5 Minnesota-Duluth 10 7- 3- 0 .7000 .5475 .5130 .5642
6 Denver 10 7- 2- 1 .7500 .5144 .5197 .5637
7 Alaska-Anchorage 6 5- 1- 0 .8333 .3792 .6098 .5623
8 Harvard 7 5- 1- 1 .7857 .5052 .4991 .5589
9 Boston College 10 3- 4- 3 .4500 .7343 .4165 .5503
10 St Lawrence 8 6- 1- 1 .8125 .4531 .5155 .5500
11 Providence 11 4- 6- 1 .4091 .6755 .4829 .5452
12 Yale 17 4- 2-11 .5588 .5411 .5340 .5418
13 Boston University 8 3- 4- 1 .4375 .6317 .4728 .5293
14 UMass-Lowell 11 8- 3- 0 .7273 .4130 .5461 .5291
15 St Cloud 10 5- 5- 0 .5000 .5375 .5284 .5263
16 Lake Superior 9 6- 1- 2 .7778 .3792 .5399 .5232
17 Western Michigan 11 6- 4- 1 .5909 .4778 .5279 .5205
18 Ferris State 8 2- 4- 2 .3750 .6194 .4903 .5189
19 Wisconsin 12 7- 4- 1 .6250 .4847 .4902 .5150
20 Northeastern 9 6- 3- 0 .6667 .4638 .4809 .5112
21 RPI 7 3- 2- 2 .5714 .4438 .5482 .5111
22 New Hampshire 10 4- 4- 2 .5000 .4700 .5471 .5068
23 Michigan State 10 6- 3- 1 .6500 .4720 .4564 .5014
24 Vermont 10 5- 4- 1 .5500 .4610 .5103 .4985
25 Brown 7 3- 4- 0 .4286 .5283 .4988 .4965
26 Minnesota 12 5- 3- 4 .5833 .4495 .4999 .4964
27 Clarkson 8 4- 3- 1 .5625 .4069 .5155 .4815
28 North Dakota 12 3- 9- 0 .2500 .5938 .4771 .4784
29 Cornell 5 1- 3- 1 .3000 .5477 .4837 .4725
30 Army 2 1- 1- 0 .5000 .3194 .6066 .4704
31 Merrimack 10 3- 6- 1 .3500 .5223 .4751 .4690
32 Michigan Tech 12 5- 7- 0 .4167 .4347 .5079 .4604
33 Northern Michigan 12 3- 7- 2 .3333 .5014 .4594 .4510
34 Ohio State 10 2- 7- 1 .2500 .5135 .4599 .4393
35 Princeton 5 2- 3- 0 .4000 .3417 .5467 .4353
36 Kent 10 4- 6- 0 .4000 .3617 .5252 .4348
37 Colorado College 11 3- 8- 0 .2727 .4705 .4730 .4319
38 Bowling Green 13 4- 9- 0 .3077 .4742 .4463 .4297
39 Dartmouth 6 1- 5- 0 .1667 .5136 .4580 .4220
40 Notre Dame 13 1-11- 1 .1154 .5266 .4520 .4145
41 Union 5 1- 4- 0 .2000 .4789 .4454 .4097
42 Air Force 7 1- 5- 1 .2143 .4333 .4687 .4037
43 Colgate 6 0- 6- 0 .0000 .5207 .4646 .3941
44 Illinois-Chicago 10 2- 7- 1 .2500 .3450 .4898 .3839
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Erik Biever GO GOPHERS!
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