May 22, 2013

Super 15 Predictions, Round 15

Team Ratings for Round 15

This year the predictions have been slightly changed with the help of a student, Joshua Dale. The home ground advantage now is different when both teams are from the same country to when the teams are from different countries. The basic method is described on my Department home page.

Here are the team ratings prior to Round 15, along with the ratings at the start of the season.

Current Rating Rating at Season Start Difference
Crusaders 7.62 9.03 -1.40
Bulls 5.89 2.55 3.30
Chiefs 3.81 6.98 -3.20
Brumbies 3.10 -1.06 4.20
Sharks 2.33 4.57 -2.20
Stormers 2.01 3.34 -1.30
Waratahs 0.92 -4.10 5.00
Blues 0.08 -3.02 3.10
Reds -0.14 0.46 -0.60
Cheetahs -0.91 -4.16 3.20
Hurricanes -1.75 4.40 -6.10
Highlanders -6.51 -3.41 -3.10
Force -8.28 -9.73 1.50
Rebels -8.50 -10.64 2.10
Kings -14.46 -10.00 -4.50

 

Performance So Far

So far there have been 88 matches played, 59 of which were correctly predicted, a success rate of 67%.

Here are the predictions for last week’s games.

Game Date Score Prediction Correct
1 Hurricanes vs. Chiefs May 17 12 – 17 -2.70 TRUE
2 Rebels vs. Stormers May 17 30 – 21 -9.50 FALSE
3 Force vs. Sharks May 17 13 – 23 -6.00 TRUE
4 Crusaders vs. Blues May 18 23 – 3 8.10 TRUE
5 Waratahs vs. Brumbies May 18 28 – 22 -0.80 FALSE
6 Bulls vs. Highlanders May 18 35 – 18 16.30 TRUE
7 Cheetahs vs. Reds May 18 27 – 13 1.20 TRUE

 

Predictions for Round 15

Here are the predictions for Round 15. The prediction is my estimated expected points difference with a positive margin being a win to the home team, and a negative margin a win to the away team.

Game Date Winner Prediction
1 Chiefs vs. Crusaders May 24 Crusaders -1.30
2 Rebels vs. Waratahs May 24 Waratahs -6.90
3 Blues vs. Brumbies May 25 Blues 1.00
4 Force vs. Highlanders May 25 Force 2.20
5 Kings vs. Cheetahs May 25 Cheetahs -11.00
6 Stormers vs. Reds May 25 Stormers 6.20
7 Sharks vs. Bulls May 25 Bulls -1.10

 

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David Scott obtained a BA and PhD from the Australian National University and then commenced his university teaching career at La Trobe University in 1972. He has taught at La Trobe University, the University of Sheffield, Bond University and Colorado State University, joining the University of Auckland, based at Tamaki Campus, in mid-1995. He has been Head of Department at La Trobe University, Acting Dean and Associate Dean (Academic) at Bond University, and Associate Director of the Centre for Quality Management and Data Analysis at Bond University with responsibility for Short Courses. He was Head of the Department of Statistics in 2000, and is a past President of the New Zealand Statistical Assocation. See all posts by David Scott »

Comments

  • avatar
    Rick Anderson

    Just intersted how the Home Team advantage ‘offset’ is working out. Having seen several low margin away predictions come out on side for the home team does this need to be tweaked?

    12 years ago