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Chapter 2: Measures of Central Tendency

89

The plot shows that there are two modes in the data set whose values are 27

and 35.

The dot plot shown in

Figure 2-28

supports the results in

Figure 2-27

.

Figure 2-28:

Dot Plot for

Example 2-10

Sometimes we are presented with group data in which we would have lost

information because the data has been summarized. In such cases, we speak

of the

modal class

for the presented information. This will be the class with

the highest frequency count.

Figure 2-29

shows the histogram with five classes for the data given in

Example 2-5

. Observe that the class with highst frequency is [990, 1090).

Thus, this will represent the modal class for the data based on the given

histogram.

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