2.2

9 a) 8 b) 2 c) 15 d) 4 e) 15% f) shape of the distribution: bell-shaped

10 a) 4 b) 9 c) 9/52= 17.31% d) skewed

11 a) 200 b) 5.7 c) d) 150-160 e) 100-110 f) 5.5% g) No

12 a) 3.125 b) c) 1400-1600 d) left-skewed e) This is wrong because the graph does not distinguish between fatalities in one state as opposed to another. So, there would have to be data on each specific state to make an accurate comparison.

13 a) right-skewed b) bell-shaped c) right-skewed d) right-skewed

14 a) left-skewed b) bell-shaped c) right-skewed d) bell-shaped

15

hist(iris$Sepal.Length)