Of course I grew up South of the Mason-Dixon line, but also well West (OK half a State West) of anywhere considered part of "The South." Of course when it comes to dialect I'm going to be subject to multiple forces. My father grew up in Michigan (Ypsilanti), and my mother grew up in Hawaii (Pahala, on the Big Island). Further much of the Anglo population of Albuquerque had ancestors, or lived themselves, in the Midwest. (I've often joked that half the people in Albuquerque lived in Chicago sometime in the last generation or two) But there is also a strong population of people who spoke, and many still speak, Spanish in their homes, as well as a scattering of other sources. So I'm not surprised that my dialect is a bit confused.
I could also complain that the test in a couple of questions lacked options for "two or more of the above" or "none of the above," which may have thrown off the results.