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Question

In the following data set, what is the most frequently occuring number?

21 33 21 12 33 21 32

A
21 and 33
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B
21
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C
33
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D
12 and 32
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Solution

The correct option is B 21
Step 1:

To find the frequency of each number of the given data set, we arrange the numbers in ascending order.
12 21 21 21 32 33 33


Step 2:

Now, we create a frequency table to determine the frequency of each data points or number of time(s) each number appears in the given data set.
Frequency Table
Number Frequency
12 1
21 3
32 1
33 2

From the above frequency table, it is clear that the number 21 appears the most number of times.

Note:––––– The most frequently occuring value or thing in a data set is called mode.

Hence, the mode of the given data set is 21.

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