b. As X goes from A to D the frequency for I increases and the frequency of II decreases. 38. a. y Yes No Low 66.667 33.333 100 x Medium 30.000 70.000 100 High 80.000 20.000 100 b. 39. a. b. For midsized cars, driving speeds seem to yield higher miles per gallon. 40. a. b. Colder average low temperature seems to lead to higher amounts of snowfall. c. Two cities have an average snowfall of nearly 100 inches of snowfall: Buffalo, N.Y and Rochester, NY. Both are located near large lakes in New York. 41. a. b. The percentage of people with hypertension increases with age. c. For ages earlier than 65, the percentage of males with hypertension is higher than that for females. After age 65, the percentage of females with hypertension is higher than that for males. 42. a.
b. As X goes from A to D the frequency for I increases and the frequency of II decreases. 38. a. y Yes No Low 66.667 33.333 100 x Medium 30.000 70.000 100 High 80.000 20.000 100 b. 39. a. b. For midsized cars, driving speeds seem to yield higher miles per gallon. 40. a. b. Colder average low temperature seems to lead to higher amounts of snowfall. c. Two cities have an average snowfall of nearly 100 inches of snowfall: Buffalo, N.Y and Rochester, NY. Both are located near large lakes in New York. 41. a. b. The percentage of people with hypertension increases with age. c. For ages earlier than 65, the percentage of males with hypertension is higher than that for females. After age 65, the percentage of females with hypertension is higher than that for males. 42. a.