April 1, 2015

NRL Predictions for Round 5

Team Ratings for Round 5

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
Rabbitohs 11.79 13.06 -1.30
Roosters 11.30 9.09 2.20
Cowboys 4.98 9.52 -4.50
Storm 4.64 4.36 0.30
Broncos 4.61 4.03 0.60
Panthers 4.41 3.69 0.70
Warriors 2.15 3.07 -0.90
Knights 1.72 -0.28 2.00
Bulldogs 1.03 0.21 0.80
Sea Eagles -0.61 2.68 -3.30
Dragons -3.09 -1.74 -1.40
Eels -3.63 -7.19 3.60
Raiders -7.94 -7.09 -0.90
Wests Tigers -9.21 -13.13 3.90
Titans -9.71 -8.20 -1.50
Sharks -11.11 -10.76 -0.40

 

Performance So Far

So far there have been 32 matches played, 19 of which were correctly predicted, a success rate of 59.4%.

Here are the predictions for last week’s games.

Game Date Score Prediction Correct
1 Eels vs. Rabbitohs Mar 27 29 – 16 -16.40 FALSE
2 Wests Tigers vs. Bulldogs Mar 27 24 – 25 -8.30 TRUE
3 Dragons vs. Sea Eagles Mar 28 12 – 4 -0.70 FALSE
4 Knights vs. Panthers Mar 28 26 – 14 -1.60 FALSE
5 Sharks vs. Titans Mar 28 22 – 24 2.20 FALSE
6 Roosters vs. Raiders Mar 29 34 – 6 21.30 TRUE
7 Warriors vs. Broncos Mar 29 16 – 24 3.10 FALSE
8 Cowboys vs. Storm Mar 30 18 – 17 3.80 TRUE

 

Predictions for Round 5

Here are the predictions for Round 5. 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 Bulldogs vs. Rabbitohs Apr 03 Rabbitohs -7.80
2 Titans vs. Broncos Apr 03 Broncos -11.30
3 Knights vs. Dragons Apr 04 Knights 7.80
4 Sea Eagles vs. Raiders Apr 04 Sea Eagles 10.30
5 Roosters vs. Sharks Apr 05 Roosters 25.40
6 Eels vs. Wests Tigers Apr 06 Eels 8.60
7 Panthers vs. Cowboys Apr 06 Panthers 2.40
8 Storm vs. Warriors Apr 06 Storm 6.50

 

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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 »