NRL Predictions for Round 9
Team Ratings for Round 9
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 | 13.32 | 12.99 | 0.30 |
| Rabbitohs | 10.24 | 9.35 | 0.90 |
| Storm | 6.74 | 11.21 | -4.50 |
| Roosters | 3.82 | 7.64 | -3.80 |
| Eels | 3.22 | 6.78 | -3.60 |
| Sharks | 2.63 | 4.50 | -1.90 |
| Raiders | 2.23 | 1.98 | 0.30 |
| Broncos | 0.46 | -5.92 | 6.40 |
| Cowboys | 0.40 | 6.23 | -5.80 |
| Dragons | -0.52 | -2.73 | 2.20 |
| Sea Eagles | -3.24 | -5.26 | 2.00 |
| Warriors | -6.30 | -11.12 | 4.80 |
| Dolphins | -6.90 | -10.00 | 3.10 |
| Titans | -6.92 | -6.32 | -0.60 |
| Knights | -9.04 | -9.53 | 0.50 |
| Bulldogs | -9.44 | -8.29 | -1.20 |
| Wests Tigers | -12.70 | -13.52 | 0.80 |
Performance So Far
So far there have been 64 matches played, 36 of which were correctly predicted, a success rate of 56.2%.
Here are the predictions for last week’s games.
| Game | Date | Score | Prediction | Correct | |
|---|---|---|---|---|---|
| 1 | Rabbitohs vs. Panthers | Apr 20 | 20 – 18 | -0.70 | FALSE |
| 2 | Eels vs. Broncos | Apr 21 | 16 – 26 | 8.00 | FALSE |
| 3 | Bulldogs vs. Sharks | Apr 22 | 20 – 33 | -8.00 | TRUE |
| 4 | Cowboys vs. Knights | Apr 22 | 18 – 16 | 14.10 | TRUE |
| 5 | Dolphins vs. Titans | Apr 23 | 28 – 26 | 3.30 | TRUE |
| 6 | Wests Tigers vs. Sea Eagles | Apr 23 | 16 – 22 | -6.60 | TRUE |
| 7 | Roosters vs. Dragons | Apr 25 | 27 – 26 | 8.40 | TRUE |
| 8 | Storm vs. Warriors | Apr 25 | 30 – 22 | 20.70 | TRUE |
Predictions for Round 9
Here are the predictions for Round 9. 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 | Sharks vs. Cowboys | Apr 27 | Sharks | 5.20 |
| 2 | Eels vs. Knights | Apr 28 | Eels | 15.30 |
| 3 | Broncos vs. Rabbitohs | Apr 28 | Rabbitohs | -6.80 |
| 4 | Raiders vs. Dolphins | Apr 29 | Raiders | 12.10 |
| 5 | Sea Eagles vs. Titans | Apr 29 | Sea Eagles | 6.70 |
| 6 | Panthers vs. Wests Tigers | Apr 29 | Panthers | 29.00 |
| 7 | Warriors vs. Roosters | Apr 30 | Roosters | -4.10 |
| 8 | Dragons vs. Bulldogs | Apr 30 | Dragons | 11.90 |
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 »