3.1

13 mean: 2025.25, median: 2209, mode: none

14 mean: 41.41, median: 40.76, mode: none

15 mean: 3670 psi, median: 3830 psi, mode: 4090 psi

16 mean: 266, median: 266, mode: 260

17

  1. mean is greater than the median, because the values in the higher ranges are much less than those in the lower ranges, which would make the median a smaller number

  2. mean is equal to the median, because the number in the middle of the data set is the same as the mean calculation

  3. mean is less than the median, because the frequency of the higher numbers outweigh the frequency of the lower numbers

3.2

5 SV=36 SD=6

6 SV=100 SD=9

7 PV=16 SD=4

8 PV=72 SD=8

9 SV=196 SD=14

10 PV=30 SD=5

14 range: 25, SD: 8

24

  1. 6 seconds

  2. it is appropriate to use the emprical rule, since the data would be bell shaped, and the empircal rule would apply

  3. 99.7%

  4. 97.7%

  5. 68%

  6. 11.4%