September 9, 2014

NRL Predictions for Finals Week 1

Team Ratings for Finals Week 1

The basic method is described on my Department home page. I have made some changes to the methodology this year, including shrinking the ratings between seasons.

Here are the team ratings prior to this week’s games, along with the ratings at the start of the season.

Current Rating Rating at Season Start Difference
Roosters 11.41 12.35 -0.90
Rabbitohs 10.49 5.82 4.70
Cowboys 8.66 6.01 2.60
Storm 7.40 7.64 -0.20
Broncos 4.18 -4.69 8.90
Sea Eagles 4.15 9.10 -4.90
Panthers 3.18 -2.48 5.70
Warriors 2.82 -0.72 3.50
Knights -0.28 5.23 -5.50
Dragons -2.10 -7.57 5.50
Bulldogs -2.95 2.46 -5.40
Raiders -7.64 -8.99 1.40
Eels -8.12 -18.45 10.30
Titans -8.40 1.45 -9.90
Sharks -10.92 2.32 -13.20
Wests Tigers -13.68 -11.26 -2.40

 

Performance So Far

So far there have been 192 matches played, 113 of which were correctly predicted, a success rate of 58.9%.

Here are the predictions for last week’s games.

Game Date Score Prediction Correct
1 Roosters vs. Rabbitohs Sep 04 22 – 18 5.80 TRUE
2 Storm vs. Broncos Sep 05 22 – 12 7.10 TRUE
3 Wests Tigers vs. Sharks Sep 06 26 – 10 -1.40 FALSE
4 Raiders vs. Eels Sep 06 33 – 20 3.10 TRUE
5 Cowboys vs. Sea Eagles Sep 06 30 – 16 7.80 TRUE
6 Knights vs. Dragons Sep 07 40 – 10 1.40 TRUE
7 Titans vs. Bulldogs Sep 07 19 – 18 -1.50 FALSE
8 Panthers vs. Warriors Sep 08 22 – 6 2.30 TRUE

 

Predictions for Finals Week 1

Here are the predictions for Finals Week 1. 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 Sea Eagles vs. Rabbitohs Sep 12 Rabbitohs -1.80
2 Roosters vs. Panthers Sep 13 Roosters 12.70
3 Cowboys vs. Broncos Sep 13 Cowboys 9.00
4 Storm vs. Bulldogs Sep 14 Storm 14.90

 

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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 »