Regarding standardisations and cohort, see an extract from my Premiership results spreadsheet. Of marginal interest and not even at the club level, but look how variable the scores lines and types of scores have been in this year's premier league compared to the last two full seasons averaged.
Highlights the natural volatility in any given population and cohort.
0-1 has occurred 19% more than average - helped by today's Stoke Win at villa 0-2 has occurred 38% LESS than average
even though away wins are much more frequent this year??
1-2 has occurred 26% more than average
1-3 has occurred 41% MORE than average - characterised by today's Win at Chelsea by Southampton.
2-3 has occurred 74% MORE than average
1-0 has occurred 64% LESS than average
2-0 is about average
2-1 has occurred 46% LESS than average
3-0 is about average
3-1 is 20% ABOVE average even though Home wins are far less frequent than for last two seasons
0-0 has occurred 19% more than average
1-1 has occurred 9% less than average
2-2 has occurred 128% MORE than average and is the scoreline most responsible for the number of draws being well above average compared to the last two seasons
3-3 has not happened at all but occurs only about 1.2% of the time