I keep on mining my data and sometimes it is just interesting to get some graphs on the most basic data, looking at the simple things. This is a graph showing how the distribution of pregame favourite is. Data is from all Betfair soccer matches that I have recorded during the last year.
1 = Home team is pregame favourite
X = Draw is pregame favourite
2 = Away team is pregame favourite
E = No clear pregame favourite
I will be back looking further on this by applying some filters.