55% General American English
30% Yankee
10% Dixie
5% Upper Midwestern
0% Midwestern
I think that 5% Upper Midwestern comes from the random choice I made on the "easy class" question (didn't realize no choice was an option). I've never even
heard any of those terms before.
I'd be more impressed with the quiz (which is cribbed almost entirely from somewhere else -- I have taken the older version) if they could spell mischief properly.
A related map.