It might be more complicated but I’d be curious to see this data adjusted to ‘month of the school year’ rather than calendar year.
IE in the UK, a September birthday would be listed as a ‘month 1’ as it’s the first month in our school calendar, and how age for this sort of thing is calculated. I think varying school start dates by country explains a few of these random peaks, but it’s hard to be sure.
Pain_Free_Politics t1_iymb014 wrote
Reply to comment by desfirsit in [OC] Birth months of FIFA World Cup players. The top three are January, February and March, possibly due to the "Relative age effect" by desfirsit
It might be more complicated but I’d be curious to see this data adjusted to ‘month of the school year’ rather than calendar year.
IE in the UK, a September birthday would be listed as a ‘month 1’ as it’s the first month in our school calendar, and how age for this sort of thing is calculated. I think varying school start dates by country explains a few of these random peaks, but it’s hard to be sure.