3.1

13 Mean is 30.5, Median 31.3, no Mode

14 Mean 93.1, Median 87.9, no Mode

15 Mean 3670, Median 3830, Mode 4090

16 Mean 266, Median 266, Mode 260

17

  1. Right Skewed, so the mean is larger than the median

  2. It is symmetric so the mean = the median

  3. Left Skewed, so the mean is smaller than the median

18

  1. IV

  2. III

  3. II

  4. I

3.2

5 sample varience (s^2) = 36, (s) = 6

6 s^2 =100, s =10

7 population variance (σ^2) = 16, standard deviation of population (σ)= 4

8 σ^2) =64, σ =8

9 s^2 =196, s=14

10 standard deviation (σ) = 5, population variance (σ^2) = 25

14 range 25, sample standard deviation 8.43