3.1
13 mean:30.51 mpg ; median: 31.3 mpg ; mode: none
14 mean: 86.35 min; median: 87.9 min ; mode: none
15 mean: 3670 psi; median: 3830 psi ; mode: 4090 psi
16 mean: 266 min; median: 266 min ; mode: 260 min
17
the mean would be greater than the median because the graph is right-skewed
the mean would equal the median because the graph is bell shaped
the median would be greater than the mean because the graph is left-skewed
18
mean: 31, median: 32
mean: 31, median: 26
mean: 31, median: 36
mean: 42, median: 42
3.2
5 variance: 36, standard deviation: 6
6 variance: 100 , standard deviation: 10
7 variance: 16, standard deviation: 4
8 variance: 64, standard deviation: 8
9 variance: 196, standard deviation: 14
10 variance: 25, standard deviation: 5
14 range:25, standard deviation: 41.9 min