Rugby Premiership Predictions for Round 15
Team Ratings for Round 15
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 | |
|---|---|---|---|
| Exeter Chiefs | 10.01 | 7.99 | 2.00 |
| Saracens | 7.01 | 9.34 | -2.30 |
| Sale Sharks | 5.77 | 0.17 | 5.60 |
| Wasps | 2.25 | 0.31 | 1.90 |
| Gloucester | 0.91 | 0.58 | 0.30 |
| Bristol | 0.01 | -2.77 | 2.80 |
| Bath | -1.12 | 1.10 | -2.20 |
| Northampton Saints | -1.44 | 0.25 | -1.70 |
| Harlequins | -1.47 | -0.81 | -0.70 |
| Leicester Tigers | -3.08 | -1.76 | -1.30 |
| London Irish | -6.14 | -5.51 | -0.60 |
| Worcester Warriors | -6.50 | -2.69 | -3.80 |
Performance So Far
So far there have been 84 matches played, 55 of which were correctly predicted, a success rate of 65.5%.
Here are the predictions for last week’s games.
| Game | Date | Score | Prediction | Correct | |
|---|---|---|---|---|---|
| 1 | Harlequins vs. Sale Sharks | Aug 15 | 16 – 10 | -3.90 | FALSE |
| 2 | Worcester Warriors vs. Gloucester | Aug 15 | 15 – 44 | -0.10 | TRUE |
| 3 | Exeter Chiefs vs. Leicester Tigers | Aug 15 | 26 – 13 | 18.20 | TRUE |
| 4 | Bath vs. London Irish | Aug 16 | 34 – 17 | 8.50 | TRUE |
| 5 | Bristol vs. Saracens | Aug 16 | 16 – 12 | -3.40 | FALSE |
| 6 | Northampton Saints vs. Wasps | Aug 17 | 21 – 34 | 2.50 | FALSE |
Predictions for Round 15
Here are the predictions for Round 15. 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 | Sale Sharks vs. Exeter Chiefs | Aug 22 | Sale Sharks | 0.30 |
| 2 | Gloucester vs. Bristol | Aug 22 | Gloucester | 5.40 |
| 3 | Wasps vs. Worcester Warriors | Aug 22 | Wasps | 13.20 |
| 4 | Saracens vs. Harlequins | Aug 22 | Saracens | 13.00 |
| 5 | London Irish vs. Northampton Saints | Aug 22 | Northampton Saints | -0.20 |
| 6 | Leicester Tigers vs. Bath | Aug 23 | Leicester Tigers | 2.50 |
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 »