7.2. Bar Graphs, Histograms and Stem-and-Leaf Plots http://www.ck12.org
3.
The area under the frequency polygon appears to be equal to the area of the histogram.
TABLE7.12:
Stem Leaf
8 7, 9
9 4
10 0
11 8
12 2, 3
13 1, 7, 8
14 1, 3, 4
15 9
16 3, 4, 4, 5, 8
17 5
18
19 3
20 4
21 7, 9
22 0, 6
23
24 8, 8
25 0
26 6(a) 30 stores
(b) 118 bottles of streak free cleaner sold by 1 store
(c) 63.3%
Answer Key for Review Questions (even numbers)