3.1
13 mean : 2025.25 median : 2209 no mode
14 mean : approx. 41.4 median : 40.76 no mode
15 mean : 3670 median : 3830 mode : 4090
16 mean : 266 median : 266 mode : 260
17 a. mean is greater than median
mean is equal to median
mean is less than median
3.2
5 s^2 = 36, s=6
6 s^2 = 100, s=10
7 o^2 = 16 o=4
8 o^2 = 64, o=8
9 s^2 = 196, s=14
10 s^2 = 25, s=5
14 range = 25, s = 7.8
24 a. s is approximately 6
not perfect but it is almost bell-shaped so that empirical rule could be applied.
95 %
93%
16 %
11%