Super 15 Predictions for Round 15
Team Ratings for Round 15
The basic method is described on my Department home page. I have made some changes to the methodology this year, including shrinking the ratings between seasons.
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 | |
|---|---|---|---|
| Crusaders | 8.51 | 8.80 | -0.30 |
| Sharks | 6.00 | 4.57 | 1.40 |
| Chiefs | 4.59 | 4.38 | 0.20 |
| Waratahs | 3.95 | 1.67 | 2.30 |
| Brumbies | 3.75 | 4.12 | -0.40 |
| Bulls | 2.70 | 4.87 | -2.20 |
| Hurricanes | 1.56 | -1.44 | 3.00 |
| Stormers | -0.21 | 4.38 | -4.60 |
| Blues | -0.45 | -1.92 | 1.50 |
| Highlanders | -1.66 | -4.48 | 2.80 |
| Force | -2.40 | -5.37 | 3.00 |
| Cheetahs | -2.93 | 0.12 | -3.10 |
| Reds | -4.54 | 0.58 | -5.10 |
| Rebels | -4.80 | -6.36 | 1.60 |
| Lions | -7.07 | -6.93 | -0.10 |
Performance So Far
So far there have been 87 matches played, 56 of which were correctly predicted, a success rate of 64.4%.
Here are the predictions for last week’s games.
| Game | Date | Score | Prediction | Correct | |
|---|---|---|---|---|---|
| 1 | Hurricanes vs. Highlanders | May 16 | 16 – 18 | 6.90 | FALSE |
| 2 | Crusaders vs. Sharks | May 17 | 25 – 30 | 8.10 | FALSE |
| 3 | Reds vs. Rebels | May 17 | 27 – 30 | 3.60 | FALSE |
| 4 | Stormers vs. Force | May 17 | 24 – 8 | 4.80 | TRUE |
| 5 | Cheetahs vs. Brumbies | May 17 | 27 – 21 | -3.90 | FALSE |
| 6 | Waratahs vs. Lions | May 18 | 41 – 13 | 13.20 | TRUE |
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 | Blues vs. Sharks | May 23 | Sharks | -2.50 |
| 2 | Rebels vs. Waratahs | May 23 | Waratahs | -6.30 |
| 3 | Highlanders vs. Crusaders | May 24 | Crusaders | -7.70 |
| 4 | Hurricanes vs. Chiefs | May 24 | Chiefs | -0.50 |
| 5 | Force vs. Lions | May 24 | Force | 8.70 |
| 6 | Stormers vs. Cheetahs | May 24 | Stormers | 5.20 |
| 7 | Bulls vs. Brumbies | May 24 | Bulls | 2.90 |
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 »
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