Section 2 ~ Picturing Distributions of Data Objective



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Histogram:




Refer to table 3.4 on p.91


Example 3:

Create a histogram from the data below that shows the ages of Academy Award-winning actresses from 1970 to 2007.




Age

Number of Actresses

20-29

8

30-39

18

40-49

8

50-59

0

60-69

2

70-79

1

80-89

1





Stem-and-leaf plot (for qualitative data):

This gives us a more detailed look at the data



Ex. ~ The histogram for the state energy use only shows us how many states fall into each category, but the stem-and-leaf plot not only tells us how many fall into each category, but more specifically the name of the state






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