June 30, 2020

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
Roosters 13.84 12.25 1.60
Storm 12.12 12.73 -0.60
Raiders 6.38 7.06 -0.70
Eels 4.43 2.80 1.60
Panthers 2.32 -0.13 2.50
Rabbitohs 2.21 2.85 -0.60
Sea Eagles 1.66 1.05 0.60
Sharks 1.56 1.81 -0.20
Wests Tigers 0.50 -0.18 0.70
Knights -2.56 -5.92 3.40
Cowboys -4.11 -3.95 -0.20
Bulldogs -4.98 -2.52 -2.50
Dragons -6.30 -6.14 -0.20
Warriors -7.23 -5.17 -2.10
Broncos -8.52 -5.53 -3.00
Titans -13.33 -12.99 -0.30

 

Performance So Far

So far there have been 56 matches played, 35 of which were correctly predicted, a success rate of 62.5%.
Here are the predictions for last week’s games.

Game Date Score Prediction Correct
1 Panthers vs. Rabbitohs Jun 25 20 – 12 -0.90 FALSE
2 Storm vs. Warriors Jun 26 50 – 6 21.80 TRUE
3 Roosters vs. Dragons Jun 26 26 – 12 21.00 TRUE
4 Cowboys vs. Knights Jun 27 32 – 20 -0.90 FALSE
5 Broncos vs. Titans Jun 27 12 – 30 9.20 FALSE
6 Eels vs. Raiders Jun 27 25 – 24 -0.20 FALSE
7 Sea Eagles vs. Sharks Jun 28 22 – 40 4.10 FALSE
8 Bulldogs vs. Wests Tigers Jun 28 6 – 34 -3.30 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 Roosters vs. Storm Jul 02 Roosters 3.70
2 Raiders vs. Dragons Jul 03 Raiders 12.70
3 Eels vs. Cowboys Jul 03 Eels 10.50
4 Titans vs. Sharks Jul 04 Sharks -12.90
5 Warriors vs. Broncos Jul 04 Warriors 1.30
6 Wests Tigers vs. Panthers Jul 04 Wests Tigers 0.20
7 Sea Eagles vs. Knights Jul 05 Sea Eagles 6.20
8 Bulldogs vs. Rabbitohs Jul 05 Rabbitohs -7.20

 

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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 »