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Question

Determine the mode(s) of the following data set.

23 47 74 54 63
47 91 87 27 74
54 26 84 19 49

A
47 and 87
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B
54 and 91
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C
47, 54 and 74
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Solution

The correct option is C 47, 54 and 74
First, we arrange the given data set in ascending order.
19 23 26 27 47
47 49 54 54 63
74 74 84 87 91

Frequency table of the given data set is as follows: Frequency Table
Number Frequency Number Frequency
19 1 54 2
23 1 63 1
26 1 74 2
27 1 84 1
47 2 87 1
49 1 91 1

From the above frequency table, we observe that the numbers 47, 54 and 74 occur 2 times each, and 2 is the maximum number of occurrence.

The modes of the given data are 47, 54 and 74.

As the given data set has three modes, it is a trimodal data.

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