I think their data is going the other direction. It is not 1.9% of Accountants are Arnolds. Its 1.9% of Arnolds are Accountants. You would expect that the perc

I think their data is going the other direction. It is not 1.9% of Accountants are Arnolds. Its 1.9% of Arnolds are Accountants. You would expect that the percent of each profession by name should be the same. So if there are 25 professions, then within any given name you should have 4% going to each professions. So 4% of Arnolds should be a profession, and 4% of Shawns should also have the same profession. That is not what the data shows though. Within any given name there is a tendency towards the professions the chart shows. This definitely does not account for location, birthdays, etc. But it is still interesting.