Question

Five children are the following ages: 12, 13, 11, 11, and 13.
What is their mean age?

Answer 1

Answer: Mean is 12

Step-by-step explanation: Mean is adding it all up and then dividing, 12 + 13 + 11 + 11 + 13 is 60

Divide 60 by the amount of numbers, 5

60 divided by 5 is 12

Answer 2

                 $\rule{50}{1}\large\blue\textsf{\textbf{\underline{Given question:-}}}}\rule{50}{1}$

            Five children are the following ages:-

•           12, 13, 11, 11, and 13.

   - What is their mean age?

        $\rule{50}{1}\large\blue\textsf{\textbf{\underline{Answer \& how to solve:-}}}\rule{50}{1}$

In order to find the mean of a set of data, we need to add all the numbers in that set, as follows:-

$\Large\text{12+13+11+11+13}$

    $\bigstar$ On simplification,

$\Large\textit{60}$

However, that's not our final step; we also need to divide by how many numbers there are (in this case, we have 5, so we divide by 5, as follows:-

                       $\Large\textsf{60:5}$

$\bigstar$ As a result, the mean of the children's ages is as follows:-

      $\Large\textit{Mean=12}$

Good luck with your studies.

         $\rule{50}{1}\smile\smile\smile\smile\smile\rule{50}{1}$