January 3, 2023

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
Sale Sharks 5.19 4.14 1.10
Leicester Tigers 3.83 7.93 -4.10
Gloucester 2.67 5.92 -3.20
Northampton Saints 2.61 3.99 -1.40
Saracens 2.15 -5.00 7.20
Harlequins 1.81 3.92 -2.10
Exeter Chiefs 0.84 3.67 -2.80
London Irish 0.54 -1.65 2.20
Wasps -0.18 0.77 -1.00
Bristol -3.19 -2.43 -0.80
Bath -5.68 -9.15 3.50
Newcastle Falcons -7.82 -8.76 0.90
Worcester Warriors -11.69 -12.27 0.60

 

Performance So Far

So far there have been 67 matches played, 45 of which were correctly predicted, a success rate of 67.2%.
Here are the predictions for last week’s games.

Game Date Score Prediction Correct
1 Sale Sharks vs. Leicester Tigers Dec 31 40 – 5 2.80 TRUE
2 Bath vs. Newcastle Falcons Jan 01 24 – 16 6.40 TRUE
3 Gloucester vs. London Irish Jan 01 8 – 6 7.30 TRUE
4 Saracens vs. Exeter Chiefs Jan 01 35 – 3 3.00 TRUE
5 Northampton Saints vs. Harlequins Jan 02 46 – 17 2.70 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 Gloucester vs. Saracens Jan 07 Gloucester 5.00
2 Newcastle Falcons vs. Leicester Tigers Jan 08 Leicester Tigers -7.10
3 Exeter Chiefs vs. Northampton Saints Jan 08 Exeter Chiefs 2.70
4 Harlequins vs. Sale Sharks Jan 09 Harlequins 1.10
5 London Irish vs. Bristol Jan 09 London Irish 8.20

 

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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 »