March 30, 2021

NRL Predictions for Round 4

Team Ratings for Round 4

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 12.97 10.25 2.70
Storm 12.97 14.53 -1.60
Panthers 10.61 8.88 1.70
Rabbitohs 9.28 7.73 1.50
Raiders 5.93 6.98 -1.00
Eels 4.34 1.68 2.70
Warriors -0.30 -1.84 1.50
Sharks -1.06 -0.76 -0.30
Knights -2.42 -2.61 0.20
Dragons -3.56 -4.95 1.40
Titans -4.26 -7.22 3.00
Wests Tigers -4.38 -3.07 -1.30
Sea Eagles -8.87 -4.77 -4.10
Broncos -9.55 -11.16 1.60
Bulldogs -11.48 -7.62 -3.90
Cowboys -12.23 -8.05 -4.20

Performance So Far

So far there have been 24 matches played, 17 of which were correctly predicted, a success rate of 70.8%.
Here are the predictions for last week’s games.

Game Date Score Prediction Correct
1 Panthers vs. Storm Mar 25 12 – 10 0.30 TRUE
2 Dragons vs. Sea Eagles Mar 26 38 – 12 4.70 TRUE
3 Rabbitohs vs. Roosters Mar 26 26 – 16 -3.00 FALSE
4 Raiders vs. Warriors Mar 27 31 – 34 11.80 FALSE
5 Broncos vs. Bulldogs Mar 27 24 – 0 1.00 TRUE
6 Eels vs. Sharks Mar 27 28 – 4 5.10 TRUE
7 Knights vs. Wests Tigers Mar 28 20 – 24 6.90 FALSE
8 Cowboys vs. Titans Mar 28 8 – 44 1.20 FALSE

Predictions for Round 4

Here are the predictions for Round 4. 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. Panthers Apr 01 Panthers -16.50
2 Bulldogs vs. Rabbitohs Apr 02 Rabbitohs -17.80
3 Storm vs. Broncos Apr 02 Storm 25.50
4 Sharks vs. Cowboys Apr 03 Sharks 14.20
5 Titans vs. Raiders Apr 03 Raiders -7.20
6 Knights vs. Dragons Apr 04 Knights 4.10
7 Roosters vs. Warriors Apr 04 Roosters 16.30
8 Wests Tigers vs. Eels Apr 05 Eels -5.70
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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 »