I have no idea why there are two clumps. Maybe one of you that has traveled to Wyoming can help us here. Without the data, I can't make the histogram with 20 subintervals. The center value for highway miles per gallon is lowest for large cars and highest for small cars. That is, smaller cars tend to get better gas mileage than larger cars.
Sports cars have the most variability, while upscale cars have the least.
Process C has a center that is too low and there is too much variability . The ages are centered about 20 years and skewed to the right, with only one clump. The 40-year old mom might be considered an outlier as the next youngest mom was 33. There is not a lot of variability, with most of the ages being between 14 and 33. The center number of miles between exits is about 12 miles and except for an one exit, which is 35.6 miles from the previous one, they are all in one cluster between 0 and 25 miles.