3.1

13 Mean: 30.52 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. The histogram is skewed right which tells us that the sample mean is greater than the median.

  2. The histogram is symmetric which tells us the sample mean is equal to the median.

  3. The histogram is skewed left which tells us that the sample mean is less than the median.

18

  1. IV / 31 / 32

  2. III / 31 / 26

  3. II / 31 / 36

  4. I / 42 / 42

3.2

5 Sample variance: 36 standard deviation: 6

6 Sample variance: 100 standard deviation: 10

7 Population variance: 16 standard deviation: 4

8 Population variance: 64 standard deviation: 8

9 Sample variance: 196 standard deviation: 14

10 Population variance: 25 standard deviation: 5

14 Range: 25 Sample standard deviation: 8.4