July 15, 2015

NRL Predictions for Round 19

Team Ratings for Round 19

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 8.23 9.09 -0.90
Broncos 7.81 4.03 3.80
Cowboys 5.13 9.52 -4.40
Rabbitohs 2.97 13.06 -10.10
Warriors 2.54 3.07 -0.50
Storm 2.00 4.36 -2.40
Panthers 0.60 3.69 -3.10
Bulldogs 0.10 0.21 -0.10
Dragons -0.01 -1.74 1.70
Sea Eagles -0.26 2.68 -2.90
Raiders -1.62 -7.09 5.50
Eels -2.14 -7.19 5.00
Sharks -3.00 -10.76 7.80
Knights -5.58 -0.28 -5.30
Wests Tigers -7.54 -13.13 5.60
Titans -7.91 -8.20 0.30

 

Performance So Far

So far there have been 128 matches played, 73 of which were correctly predicted, a success rate of 57%.

Here are the predictions for last week’s games.

Game Date Score Prediction Correct
1 Raiders vs. Knights Jul 10 36 – 22 5.80 TRUE
2 Bulldogs vs. Broncos Jul 11 8 – 16 -4.10 TRUE
3 Warriors vs. Storm Jul 12 28 – 14 3.00 TRUE
4 Sharks vs. Dragons Jul 12 28 – 8 -3.20 FALSE
5 Titans vs. Sea Eagles Jul 13 6 – 38 -0.40 TRUE

 

Predictions for Round 19

Here are the predictions for Round 19. 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 Storm vs. Panthers Jul 17 Storm 4.40
2 Eels vs. Bulldogs Jul 17 Eels 0.80
3 Dragons vs. Rabbitohs Jul 18 Dragons 0.00
4 Knights vs. Titans Jul 18 Knights 5.30
5 Raiders vs. Sharks Jul 18 Raiders 4.40
6 Roosters vs. Warriors Jul 19 Roosters 9.70
7 Broncos vs. Wests Tigers Jul 19 Broncos 18.40
8 Sea Eagles vs. Cowboys Jul 20 Cowboys -2.40

 

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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 »