Chapter 2, Skills and Concepts

1. 85, 87, 81, 92, 87, 80, 83
   1. 99, 92, none
   2. 85, 92, 87
   3. 99, 85, none
   4. 85, 85, 87
2. 24, 45, 33, 27, 24
   1. 38.25, 33, 24
   2. 30.6, 27, 24
   3. 38.25, 27, 2
   4. 30.6, 33, 2
3. 2.4, 2.3, 2.1, 2.5, 2.3, 2.2
   1. 2.76, 2.3, 2
   2. 2.3, 2.35, 2.3
   3. 2.3, 2.3, 2.3
   4. 2.76, 2.35, 2
4. 42, 18, 55, 37, 57, 37, 49, 47, 37
   1. 42.1, 42, 37
   2. 37.9, 47, 37
   3. 42.1, 47, 3
   4. 37.9, 42, 3
Use the stem-and-leaf plot to answer the questions. It shows the number of kilometers walked during a benefit walk.
Benefit Walk
(km)
5. Find the range.
   1. 3.4 km
   2. 38 km
   3. 3.8 km
   4. 34 km
6. How many data items are there?
   1. 19 items
   2. 4 items
   3. 18 items
   4. 21 items
7. How many people walked more than 19 km?
   1. 2 people
   2. 19 people
   3. 6 people
   4. no people
8. Find the mean, median, and mode.
   1. 18, 17.8, 19.9
   2. 18.4, 18.4, 19.9
   3. 18, 18.4, 16.5
   4. 18, 18.4, 19.9

Click the button to highlight the correct answers.