April 18, 2023

NRL Predictions for Round 8

Team Ratings for Round 8

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
Panthers 13.62 12.99 0.60
Rabbitohs 9.94 9.35 0.60
Storm 7.58 11.21 -3.60
Roosters 4.37 7.64 -3.30
Eels 4.33 6.78 -2.40
Raiders 2.23 1.98 0.30
Sharks 2.07 4.50 -2.40
Cowboys 1.21 6.23 -5.00
Broncos -0.65 -5.92 5.30
Dragons -1.06 -2.73 1.70
Sea Eagles -3.18 -5.26 2.10
Dolphins -6.75 -10.00 3.20
Titans -7.06 -6.32 -0.70
Warriors -7.14 -11.12 4.00
Bulldogs -8.89 -8.29 -0.60
Knights -9.85 -9.53 -0.30
Wests Tigers -12.76 -13.52 0.80

Performance So Far

So far there have been 56 matches played, 30 of which were correctly predicted, a success rate of 53.6%.
Here are the predictions for last week’s games.

Game Date Score Prediction Correct
1 Dolphins vs. Rabbitohs Apr 13 14 – 36 -12.30 TRUE
2 Sharks vs. Roosters Apr 14 22 – 12 -0.80 FALSE
3 Sea Eagles vs. Storm Apr 14 18 – 8 -10.20 FALSE
4 Warriors vs. Cowboys Apr 15 22 – 14 -3.90 FALSE
5 Knights vs. Panthers Apr 15 15 – 16 -23.10 TRUE
6 Titans vs. Broncos Apr 15 26 – 43 -1.40 TRUE
7 Raiders vs. Dragons Apr 16 20 – 14 6.40 TRUE
8 Eels vs. Bulldogs Apr 16 30 – 4 14.70 TRUE

Predictions for Round 8

Here are the predictions for Round 8. 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 Rabbitohs vs. Panthers Apr 20 Panthers -0.70
2 Eels vs. Broncos Apr 21 Eels 8.00
3 Bulldogs vs. Sharks Apr 22 Sharks -8.00
4 Cowboys vs. Knights Apr 22 Cowboys 14.10
5 Dolphins vs. Titans Apr 23 Dolphins 3.30
6 Wests Tigers vs. Sea Eagles Apr 23 Sea Eagles -6.60
7 Roosters vs. Dragons Apr 25 Roosters 8.40
8 Storm vs. Warriors Apr 25 Storm 20.70
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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 »