September 21, 2021

Rugby Premiership Predictions for Round 2

Team Ratings for Round 2

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 6.15 7.35 -1.20
Wasps 5.66 5.66 -0.00
Sale Sharks 4.58 4.96 -0.40
Bath 2.52 2.14 0.40
Bristol -0.07 1.28 -1.40
Harlequins -0.61 -1.08 0.50
Gloucester -1.64 -1.02 -0.60
Northampton Saints -1.87 -2.48 0.60
Saracens -3.65 -5.00 1.40
Newcastle Falcons -3.99 -3.52 -0.50
Leicester Tigers -4.95 -6.14 1.20
Worcester Warriors -5.39 -5.71 0.30
London Irish -8.37 -8.05 -0.30

 

Performance So Far

So far there have been 6 matches played, 3 of which were correctly predicted, a success rate of 50%.
Here are the predictions for last week’s games.

Game Date Score Prediction Correct
1 Bristol vs. Saracens Sep 18 9 – 26 10.80 FALSE
2 Leicester Tigers vs. Exeter Chiefs Sep 19 34 – 19 -9.00 FALSE
3 Northampton Saints vs. Gloucester Sep 19 34 – 20 3.00 TRUE
4 Worcester Warriors vs. London Irish Sep 19 36 – 24 6.80 TRUE
5 Sale Sharks vs. Bath Sep 19 20 – 19 7.30 TRUE
6 Newcastle Falcons vs. Harlequins Sep 20 20 – 26 2.10 FALSE

 

Predictions for Round 2

Here are the predictions for Round 2. 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. Leicester Tigers Sep 25 Gloucester 7.80
2 Bath vs. Newcastle Falcons Sep 26 Bath 11.00
3 Exeter Chiefs vs. Northampton Saints Sep 26 Exeter Chiefs 12.50
4 Harlequins vs. Worcester Warriors Sep 26 Harlequins 9.30
5 Wasps vs. Bristol Sep 26 Wasps 10.20
6 London Irish vs. Sale Sharks Sep 27 Sale Sharks -8.50

 

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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 »