Saw this posted earlier about the season so far.
Despite all the improvements compared to last year, the stats across the season as a whole suggest that we’re very much middle of the pack if you look at expected goals for and against.
It’s nice to have a good feeling around here again but we’ve still a ways to go yet.
I'm not massively acquainted with XG so I might be massively off with this post.
From my point of view, teams will score goals every season that wouldn't normally be 'expected'. They may also save certain goals through unexpected amazing defending. Not always the case for us, but you know what I mean.
These should still be accounted for in any statistical model. Perhaps XG does account for them and I just don't know the details. Or maybe that's the actual league table, which accounts for that scenario.
Either way, Silva has given the team confidence, which has resulted in play and attempts on goal that may be recorded against expectations. These may not have been attempted by the players under previous regimes.