So because we have this variability in each of those cases, this is definitely a statistical question. Do English professors get paid less than math professors? So once again, all English professors don't get paid the same amount, and all math professors don't get paid the same amount. Some English professors might do quite well. Some might make very little. Same thing for math professors. So we'd probably want to find some type of an average to represent the central tendency for each of these.