3.1

13 Mean = 30.52…Median = 31.3…mode = N/A

14 Mean = 93.1….Median = 87.9… Mode = N/A

15 Mean = 3,670 psi… Median = 3,830 psi…. Mode = 4090 psi

16 Mean = 266….MEdian = 266…Mode = 260

17

  1. The histogram is skewed right which means mean is greater than median.

  2. It is symmetric which means mean and median are close to equal.

  3. It is skewed left which means the mean is less than the median.

3.2

5 standard deviation = 6, variance = 36

6 SD = 10 SV = 100

7 SD = 4 SV = 16

8 SD = 6.2 PV = 38.44

9 Sd = 14 SV = 196

10 SD = 3.535 PV = 12.5

14 Range = 25 minutes SSD = 1.27

24

  1. 6 seconds