I decided it might be interesting to look at how our xG predicted points tallied with what we actually got. It's a crude analysis as
1) Penalties not given (Brooks vs Swansea), bad refereeing decisions or men barely missing crosses aren't incorporated.
2) xG are based on average players skills
3) xG will have error within them.
4) I rounded to the nearest goal in the initial analysis. So xGs of 2.2 and 1.6 would be treated as a 2-2 draw.
To counter 4), I redid the analysis looking at the difference between the scores and then rounding this, so 2.2 and 1.6 would be a win to the team with 2.2.
So here are two plots, the first naively rounding both scores. In both, we appear to have either got more than we deserved, or pretty much what we deserved. I had anticipated a better outcome, which shows I must have been biased.
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