Question

find the mean of the seven whole numbers

Answer 1

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First 7 whole numbers = 0,1,2,3,4,5,6 .

Mean =
$\frac{sum \: of \: data}{number \: of \: data}$
=
$\frac{0 + 1 + 2 + 3 + 4 + 5 + 6}{7} \\ = \frac{21}{7} = 3$

The required mean is = 3 .

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