• About
  • Advertise
  • Privacy & Policy
  • Contact
PAC-8 Hockey
Monday, March 8, 2021
  • About
    • Contact the League
    • Coaches of the Year
    • Championship Teams
  • Standings
    • 2019-20 Standings
    • 2018-19 Standings
    • 2018-19 Season
  • Tournaments
    • 2020 PAC-8 Championships
    • 2019 PAC-8 Championships
    • 2018 PAC-8 Championships
    • 2017 PAC-8 Championships
    • 2016 PAC-8 Championships
    • 2015 PAC-8 Championships
    • 2014 PAC-8 Championships
  • Recruitment
  • Multimedia
    • Broadcasts
  • Teams
    • Arizona State
    • California
    • Eastern Washington
    • UCLA
    • San Diego State
    • San Jose State
    • Stanford
    • UCSD
    • USC
    • Washington
    • Washington State
    • Western Washington
    • Previous Teams
      • Boise State
      • Oregon
      • Utah
No Result
View All Result
  • About
    • Contact the League
    • Coaches of the Year
    • Championship Teams
  • Standings
    • 2019-20 Standings
    • 2018-19 Standings
    • 2018-19 Season
  • Tournaments
    • 2020 PAC-8 Championships
    • 2019 PAC-8 Championships
    • 2018 PAC-8 Championships
    • 2017 PAC-8 Championships
    • 2016 PAC-8 Championships
    • 2015 PAC-8 Championships
    • 2014 PAC-8 Championships
  • Recruitment
  • Multimedia
    • Broadcasts
  • Teams
    • Arizona State
    • California
    • Eastern Washington
    • UCLA
    • San Diego State
    • San Jose State
    • Stanford
    • UCSD
    • USC
    • Washington
    • Washington State
    • Western Washington
    • Previous Teams
      • Boise State
      • Oregon
      • Utah
No Result
View All Result
PAC-8 Hockey
No Result
View All Result

PAC-8 adopts KRACH Ranking System

by pac8admin
June 16, 2014
in News, PAC-8
0 0
0
PAC-8 adopts KRACH Ranking System
Share on FacebookShare on Twitter

March 6, 2014

PAC-8 Hockey Conference adopts KRACH Ranking System for 2014-15 post season play.

KRACH Ranking Notes:
-KRACH is well vetted and utilized by NCAA (not an even amount of games), USA Hockey, USHL, EJEPL (not an even amount of games), EJHL, Minnesota High School Hockey League (not an even amount of games), etc
-Widely used to rank teams where there is an unbalanced schedule
-Only factors wins, losses, and ties
-Does not factor goals for, goals against, goal differential
-Teams can play as many PAC-8 Games as desired (up to 16 games)
-Teams are required to play at least 8 PAC-8 games
-System cannot easily be distorted by teams with strong records playing against weak opposition
-The Statistical model in which this is based has been around since 1929

KRACH — or “Ken’s Ratings for American College Hockey” — is the implementation for college hockey of a sophisticated mathematical model known as the Bradley-Terry rating system, first applied to college hockey by a statistician named Ken Butler.

This method is based on a statistical technique called logistic regression, in essence meaning that teams’ ratings are determined directly from their won-loss records against one another. A key feature of KRACH is that strength of schedule is calculated directly from the ratings themselves, meaning that KRACH, unlike many ratings (including RPI) cannot easily be distorted by teams with strong records against weak opposition.

The ratings are on an odds scale, so if Team A’s KRACH rating is three times as large as Team B’s, Team A would be expected to amass a winning percentage of .750 and Team B a winning percentage of .250 if it played each other enough times. The correct ratings are defined such that the “expected” winning percentage for a team in the games it’s already played is equal to its “actual” winning percentage.

An alternative definition of a team’s KRACH rating is as the product of its Winning Ratio (winning percentage divided by one minus winning percentage) with the weighted average of its opponents’ KRACH ratings. (The definition of the weighting factor makes this equivalent to the first definition of the KRACH ratings.) In addition to KRACH and RRWP, the table above lists each team’s Winning Percentage, Winning Ratio and Strength of Schedule (the aforementioned weighted average of their opponents’ KRACH ratings).

Additional Reading:
Link 1: http://www.mscs.dal.ca/~butler/krachexp.htm
Link 2: http://www.elynah.com/tbrw/tbrw.cgi?krach

pac8admin

Next Post
PAC-8 adopts KRACH Ranking System

PAC-8 Launches new Website

Connect with us

  • 81 Followers
  • 47.4k Followers
  • 22.9k Followers
  • Trending
  • Comments
  • Latest

PAC-8 releases 2019 Tournament Schedule

February 3, 2019
Field Set for 2020 PAC 8 Championships

Field Set for 2020 PAC 8 Championships

February 7, 2020
Field Set for 2019 PAC 8 Championships

Field Set for 2019 PAC 8 Championships

February 4, 2019
Oregon tops Cal for 2019 PAC-8 Championship

Oregon tops Cal for 2019 PAC-8 Championship

March 6, 2019

Arizona State wins 2014 PAC-8 Championship

0
PAC-8 adopts KRACH Ranking System

PAC-8 adopts KRACH Ranking System

0
PAC-8 adopts KRACH Ranking System

PAC-8 Launches new Website

0
PAC-8 Announces 2015 Recruiting Camp

PAC-8 announces 2015 Championship site

0
Field Set for 2020 PAC 8 Championships

Field Set for 2020 PAC 8 Championships

February 7, 2020
Oregon tops Cal for 2019 PAC-8 Championship

Oregon tops Cal for 2019 PAC-8 Championship

March 6, 2019
Field Set for 2019 PAC 8 Championships

Field Set for 2019 PAC 8 Championships

February 4, 2019

PAC-8 releases 2019 Tournament Schedule

February 3, 2019

Recommended

Field Set for 2020 PAC 8 Championships

Field Set for 2020 PAC 8 Championships

February 7, 2020
Oregon tops Cal for 2019 PAC-8 Championship

Oregon tops Cal for 2019 PAC-8 Championship

March 6, 2019
Field Set for 2019 PAC 8 Championships

Field Set for 2019 PAC 8 Championships

February 4, 2019

PAC-8 releases 2019 Tournament Schedule

February 3, 2019

About Us

We bring you the best Premium WordPress Themes that perfect for news, magazine, personal blog, etc. Check our landing page for details.

Read more

Categories

  • 2014-15
  • 2015-16
  • 2016-17
  • 2017-18
  • 2018-19
  • 2019-20
  • ACHA
  • ASU
  • California
  • KRACH Rankings
  • Men's
  • News
  • Oregon
  • PAC-8
  • Recruiting
  • SDSU
  • Seasons
  • SJSU
  • UCLA
  • USC
  • Utah
  • UW
  • Women's
  • WSU
  • WWU

Recent News

Field Set for 2020 PAC 8 Championships

Field Set for 2020 PAC 8 Championships

February 7, 2020
Oregon tops Cal for 2019 PAC-8 Championship

Oregon tops Cal for 2019 PAC-8 Championship

March 6, 2019

© 2021 PAC-8 Hockey, All Rights Reserved

No Result
View All Result
  • About
    • Contact the League
    • Coaches of the Year
    • Championship Teams
  • Standings
    • 2019-20 Standings
    • 2018-19 Standings
    • 2018-19 Season
  • Tournaments
    • 2020 PAC-8 Championships
    • 2019 PAC-8 Championships
    • 2018 PAC-8 Championships
    • 2017 PAC-8 Championships
    • 2016 PAC-8 Championships
    • 2015 PAC-8 Championships
    • 2014 PAC-8 Championships
  • Recruitment
  • Multimedia
    • Broadcasts
  • Teams
    • Arizona State
    • California
    • Eastern Washington
    • UCLA
    • San Diego State
    • San Jose State
    • Stanford
    • UCSD
    • USC
    • Washington
    • Washington State
    • Western Washington
    • Previous Teams
      • Boise State
      • Oregon
      • Utah

© 2021 PAC-8 Hockey, All Rights Reserved

Welcome Back!

Login to your account below

Forgotten Password?

Create New Account!

Fill the forms below to register

All fields are required. Log In

Retrieve your password

Please enter your username or email address to reset your password.

Log In