3.1

13 Mean= 30.52 M/pg; Median= 31.3 M/pg; Mode= n/a

14 Mean= 93.1 minutes; Median= 87.9 minutes; Mode= n/a

15 Mean= 3670 psi; Median= 3830 psi; Mode= 4090 psi

16 Mean = 266 minutes ; Median= 266 minutes; Mode= 260 minutes.

17

  1. Since the histogram is skewed right, this suggest that mean > median.

  2. Since the histogram is appropximately bell shaped, this shows that mean is approximately equal to median.

  3. Since histogram is skewed left, this suggests that mean < median

18

  1. IV Mean=31 Median=32

  2. III Mean=31 Median=26

  3. II Mean=31 Median=36

  4. I Mean= 42 Median=42

3.2

5 Sample Standard Deviation = 6; Sample Variance=36

6 Sample Standard Deviation = 10; Sample Variance=100

7 Population Standard Deviation= 4; Population Variance=16

8 Population Standard Deviation= 8; Population Variance= 64

9 Sample Standard Deviation =14 ; Sample Variance= 196

10 Sample Standard Deviation = 5.48 ; Sample Variance= 30

14 Range= 25; Sample Standard Deviation= 9.23