3.1

13 type answers 30.52 mpg, 31.3 mpg, no mode

14 type answers 93.1, 85.25, no mode

15 type answers 3670 ppi, 3830 ppi, 4090 ppi

16 type answers 266, 260, 260

17

  1. type answer Mean is greater than the median, the average is between 3 and 6, and the median is between 15-18.

  2. type answer Mean is equal to the median, the values of 11-12 are the average and are also in the median range median=27

  3. type answer The median is greater than the mean, 19 is bigger than the average of 20-25. median= 25.5

3.2

5 type answer s^2=36, s=6

6 type answer s^2=100 s=10

7 type answer sigma^2=16, sigma=4

8 type answer sigma^2=64, sigma=8

9 type answer s^2=196, s=14

10 type answer sigma^2=25, sigma=5

14 type answer range=25, s=8.42

24

  1. 6 seconds

  2. The length of eruptions of 101 and 106.5 happen 20 times, and the length of eruptions between 106.5 and 112 happen 12 times. These length ranges fall into the 68th percentile of the emprical rule. The length of eruptions between 112-117.4 happen twice, falling into the 95th percentile, and the length of eruption of 117.5 happens once. We can use the empirical rule to accuractely describe this data, because the data is shaped like a bell curve–the left side of the histogram goes from low, to high, to low levels of eruption.

  3. 83 % or

  4. 88 %

  5. 25 %

  6. 11 %