July 1, 2015

NRL Predictions for Round 17

Team Ratings for Round 17

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 8.23 9.09 -0.90
Broncos 7.52 4.03 3.50
Cowboys 4.67 9.52 -4.90
Rabbitohs 4.06 13.06 -9.00
Storm 2.78 4.36 -1.60
Dragons 2.04 -1.74 3.80
Warriors 1.76 3.07 -1.30
Bulldogs 0.38 0.21 0.20
Panthers -0.49 3.69 -4.20
Raiders -2.21 -7.09 4.90
Eels -2.93 -7.19 4.30
Sea Eagles -2.96 2.68 -5.60
Sharks -4.01 -10.76 6.70
Knights -4.99 -0.28 -4.70
Titans -5.78 -8.20 2.40
Wests Tigers -6.74 -13.13 6.40

 

Performance So Far

So far there have been 118 matches played, 67 of which were correctly predicted, a success rate of 56.8%.

Here are the predictions for last week’s games.

Game Date Score Prediction Correct
1 Broncos vs. Knights Jun 26 44 – 22 14.40 TRUE
2 Rabbitohs vs. Sea Eagles Jun 26 20 – 8 9.70 TRUE
3 Cowboys vs. Sharks Jun 27 18 – 24 14.50 FALSE
4 Eels vs. Dragons Jun 27 16 – 12 -3.00 FALSE
5 Warriors vs. Raiders Jun 27 30 – 8 5.70 TRUE
6 Roosters vs. Titans Jun 28 20 – 10 18.20 TRUE
7 Wests Tigers vs. Panthers Jun 28 12 – 35 -0.10 TRUE
8 Bulldogs vs. Storm Jun 29 20 – 4 -1.90 FALSE

 

Predictions for Round 17

Here are the predictions for Round 17. 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. Rabbitohs Jul 03 Rabbitohs -1.50
2 Dragons vs. Cowboys Jul 04 Dragons 0.40
3 Sea Eagles vs. Sharks Jul 05 Sea Eagles 4.10
4 Wests Tigers vs. Eels Jul 06 Eels -0.80

 

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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 »