May 28, 2015

NRL Predictions for Round 12

Team Ratings for Round 12

The basic method is described on my Department home page.

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 9.18 9.09 0.10
Cowboys 7.12 9.52 -2.40
Storm 5.13 4.36 0.80
Rabbitohs 5.07 13.06 -8.00
Broncos 4.56 4.03 0.50
Dragons 2.04 -1.74 3.80
Panthers 1.01 3.69 -2.70
Warriors 0.85 3.07 -2.20
Bulldogs -1.41 0.21 -1.60
Sea Eagles -2.10 2.68 -4.80
Knights -2.42 -0.28 -2.10
Raiders -2.55 -7.09 4.50
Sharks -5.61 -10.76 5.10
Eels -5.90 -7.19 1.30
Wests Tigers -6.65 -13.13 6.50
Titans -6.97 -8.20 1.20

 

Performance So Far

So far there have been 84 matches played, 47 of which were correctly predicted, a success rate of 56%.

Here are the predictions for last week’s games.

Game Date Score Prediction Correct
1 Rabbitohs vs. Eels May 22 14 – 12 15.90 TRUE
2 Wests Tigers vs. Cowboys May 23 0 – 8 -11.30 TRUE
3 Raiders vs. Bulldogs May 24 34 – 41 3.30 FALSE
4 Knights vs. Broncos May 25 18 – 31 -2.50 TRUE

 

Predictions for Round 12

Here are the predictions for Round 12. 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 Panthers vs. Eels May 29 Panthers 9.90
2 Cowboys vs. Sea Eagles May 30 Cowboys 12.20
3 Raiders vs. Broncos May 30 Broncos -4.10
4 Titans vs. Rabbitohs May 30 Rabbitohs -9.00
5 Dragons vs. Sharks May 31 Dragons 10.70
6 Warriors vs. Knights May 31 Warriors 7.30
7 Roosters vs. Storm Jun 01 Roosters 7.00

 

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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 »