I am from Germany so this quiz is quiet hard for me. Some names were easy to guess as they are mostly used among ethnic or religious groups, that are a much higher share of the population in one country then the other. The others I mostly tried to guess british for the more traditional sounding names and american for the modern soundiing names. Got 11 right.
I’ve never been to the US and once to London but got 15/15! The religious names are linked to knowing the major immigrant groups in each country, and with the other names I went based on thousands of hours of British and American media consumption, and differentiation between tradition and novelties… great quiz.
Probably because data is collected separately, and by different agencies, for Scotland and Northern Ireland, so there are no easy-to-find combined figures for the whole of the UK. The Office for National Statistics only covers England and Wales, e.g. https://www.ons.gov.uk/peoplepopulationandcommunity/birthsdeathsandmarriages/livebirths/bulletins/babynamesenglandandwales/2020 .
To be honest, given the relative populations of the four parts of the UK, I don't think it would affect the answers to the quiz either way. I suspect the numbers of Jesuses, Landons, Averys, Kennedys & Devins in Scotland and NI will be pretty small. Allison and Hailey were the only ones that gave me a slight pause, if it had been Alison I would have gone for England and Wales
I got 10/15. Expected random result is 7.5 and chance of getting 10 or more by guessing is 15 %. I guessed almost all, but there was component of knowledge in couple of cases, like Mohammad and Jesus. Names like Imogen are totally new for me as a Finn.
So why are the answer boxes labeled "British" and "American"? They should be "United States" and "England & Wales".
And they are not American or British names, they are merely more popular in one place of the other.