7. Describe the shape of 8. Choose the most appropriate the distribution. measures to describe the center and the variation. Find the measures you chose.2040608010030–390Temperature (ºF)FrequencyDaily High Temperatures40–4950–5960–6970–7980–8990–995859606162Height(inches)Students’ Heights10.4Box-and-Whisker Plots (pp. 458–465)Make a box-and-whisker plot for the weights (in pounds) of pumpkins sold at a market.16, 20, 14, 15, 12, 8, 8, 19, 14, 10, 8, 16Step 1:Order the data. Find the median and the quartiles.least value 8 8 8 10 12 14 14 15 16 16 19 20 greatest valuefirst quartile, 9 median, 14 third quartile, 16Step 2:Draw a number line that includes the least and the greatest values. Graph points above the number line that represent the five-number summary.Step 3:Draw a box using the quartiles. Draw a line through the median. Draw whiskers from the box to the least and the greatest values.Weight(pounds)810911121314161820151719Make a box-and-whisker plot for the data.9. Ages of volunteers at a hospital: 10. Masses (in kilograms) of lions:14, 17, 20, 16, 17, 14, 21, 18 120, 200, 180, 150, 200, 200, 230, 160lower halfupper halfes.

470
Chapter 10
Data Displays
Chapter Test
10
4
5
6
7
10
8
9
Glasses of
water
Water Consumed
Test Practice
Make a stem-and-leaf plot of the data.
1.
Quiz Scores (%)
96
88
80
72
80
94
92
100
76
80
68
90
2.
CDs Sold Each Day
45
31
29
38
38
67
40
62
45
60
40
39
60
43
48
3. Find the mean, median, mode, 4. Display the data in a histogram.
0
5. WATERThe dot plot shows the number of glasses of water that the students in a class drink in one day. a.Describe the shape of the distribution.b.Choose the most appropriate measures to describe the center and the variation. Find the measures you chose.
Make a box-and-whisker plot for the data.6. Ages (in years) of dogs at a vet’s office: 1, 3, 5, 11, 5, 7, 5, 97. Lengths (in inches) of fish in a pond: 12, 13, 7, 8, 14, 6, 13, 108. Hours practiced each week: 7, 6, 5, 4.5, 3.5, 7, 7.5, 2, 8, 7, 7.5, 6.59. CELL PHONESThe double box-and-whisker plot compares the battery life (in hours) of two brands of cell phones. a.What is the range of the upper 75% of each brand? b.Which battery has a longer battery life? Explain.
2
3
3.5
4
2.5
4.5
5
5.5
6
6.5
7
Brand B
Brand A
Battery
life
(hours)