February 9, 2021

Rugby Premiership 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
Exeter Chiefs 6.69 7.35 -0.70
Sale Sharks 4.40 4.96 -0.60
Bristol 4.15 1.28 2.90
Wasps 2.67 5.66 -3.00
Harlequins 1.21 -1.08 2.30
Northampton Saints -1.04 -2.48 1.40
Bath -2.89 2.14 -5.00
Gloucester -3.20 -1.02 -2.20
Leicester Tigers -5.46 -6.14 0.70
London Irish -5.95 -8.05 2.10
Newcastle Falcons -6.17 -10.00 3.80
Worcester Warriors -7.49 -5.71 -1.80

 

Performance So Far

So far there have been 43 matches played, 24 of which were correctly predicted, a success rate of 55.8%.
Here are the predictions for last week’s games.

Game Date Score Prediction Correct
1 Bath vs. Harlequins Feb 07 15 – 28 2.00 FALSE
2 Bristol vs. Sale Sharks Feb 07 13 – 20 5.60 FALSE
3 Leicester Tigers vs. Worcester Warriors Feb 07 41 – 24 5.20 TRUE
4 London Irish vs. Gloucester Feb 07 32 – 26 1.10 TRUE
5 Newcastle Falcons vs. Exeter Chiefs Feb 07 9 – 15 -8.80 TRUE
6 Wasps vs. Northampton Saints Feb 07 17 – 22 9.80 FALSE

 

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 Exeter Chiefs vs. London Irish Feb 14 Exeter Chiefs 17.10
2 Gloucester vs. Bristol Feb 13 Bristol -2.80
3 Harlequins vs. Leicester Tigers Feb 14 Harlequins 11.20
4 Northampton Saints vs. Newcastle Falcons Feb 14 Northampton Saints 9.60
5 Sale Sharks vs. Bath Feb 13 Sale Sharks 11.80
6 Worcester Warriors vs. Wasps Feb 15 Wasps -5.70

 

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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 »