Question

Find the mean of:
$12,9,6,11$ and $17$

Answer 1

Mean is equal to the sum of data divided by the number of data.

Hence, by using the above definition,

$\begin{array}{cc}\text{Mean}& =\frac{12+9+6+11+17}{5}\\ & =\frac{55}{5}\\ & =11\end{array}$

Hence, mean of the given data is $11.$