June 17, 2015

NRL Predictions for Round 15

Team Ratings for Round 15

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 8.66 9.09 -0.40
Broncos 6.79 4.03 2.80
Cowboys 6.35 9.52 -3.20
Storm 4.20 4.36 -0.20
Rabbitohs 3.88 13.06 -9.20
Dragons 2.70 -1.74 4.40
Warriors -0.88 3.07 -4.00
Raiders -1.36 -7.09 5.70
Panthers -1.40 3.69 -5.10
Bulldogs -1.51 0.21 -1.70
Sea Eagles -3.17 2.68 -5.80
Eels -3.44 -7.19 3.70
Knights -3.94 -0.28 -3.70
Wests Tigers -4.78 -13.13 8.30
Titans -4.86 -8.20 3.30
Sharks -5.92 -10.76 4.80

 

Performance So Far

So far there have been 103 matches played, 58 of which were correctly predicted, a success rate of 56.3%.

Here are the predictions for last week’s games.

Game Date Score Prediction Correct
1 Wests Tigers vs. Rabbitohs Jun 12 34 – 6 -10.80 FALSE
2 Warriors vs. Roosters Jun 13 21 – 25 -5.80 TRUE
3 Titans vs. Bulldogs Jun 14 28 – 14 -2.70 FALSE
4 Storm vs. Eels Jun 15 22 – 26 13.00 FALSE

 

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 Sea Eagles vs. Wests Tigers Jun 19 Sea Eagles 4.60
2 Bulldogs vs. Panthers Jun 20 Bulldogs 2.90
3 Raiders vs. Cowboys Jun 20 Cowboys -4.70
4 Titans vs. Warriors Jun 20 Titans 0.00
5 Knights vs. Sharks Jun 21 Knights 5.00
6 Storm vs. Broncos Jun 21 Storm 0.40
7 Dragons vs. Roosters Jun 22 Roosters -3.00

 

avatar

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 »