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Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola
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Histogram Table 22 is a frequency distribution summarizing the IQ scores of the low lead

Chapter 2, Problem 1

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QUESTION:

Histogram Table 22 is a frequency distribution summarizing the IQ scores of the low lead group listed in Table 21, and Figure 22 is a histogram depicting that same data set. When trying to better understand the IQ data, what is the advantage of examining the histogram instead of the frequency distribution?

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QUESTION:

Histogram Table 22 is a frequency distribution summarizing the IQ scores of the low lead group listed in Table 21, and Figure 22 is a histogram depicting that same data set. When trying to better understand the IQ data, what is the advantage of examining the histogram instead of the frequency distribution?

ANSWER:

Step 1 of 2

Given a frequency distribution summarizing the IQ scores of the low lead group, and a histogram depicting that same data set.

The frequency distribution table for the given data is

IQ Score

frequency

50-69

2

70-89

33

90-109

35

110-129

7

130-149

1

The histogram for the given data

From the graphical representation of the IQ score of the low lead group, the interval 130-149 has less frequency of 1, and the interval 90-109 has the maximum frequency of 35. Also, the histogram is symmetric.

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