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Question

Match the datasets to their averages.

A
6
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B
25
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C
40
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D
5
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Solution

The average of a dataset is given by
Average=Sum of all observationsTotal number of observations.

Consider the dataset 20, 30, 40, 70.

Average=20+30+40+704=1604=40

Consider the dataset 6, 3, 7, 8, 4, 2.

Average=6+3+7+8+4+26=306=5

For the dataset 17, 19, 41, 23, we have

Average=17+19+41+234=1004=25.

Lastly, for the dataset 5, 9, 7, 7, 3, 5,

Average=5+9+7+7+3+56=366=6.

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