3.1

13 mean:30.5 median: 31.3 mode: none

14 mean:93.1 median:87.9 mode: none

15 mean:3670 median:3830 mode:4090

16 mean:266 median: 266 mode:260

17

  1. mean>median

  2. mean roughly equal to median

  3. mean<median

18

  1. IV

  2. III

  3. II

  4. I

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: 282-257=25 sample standard deviation: 8.43