Question

a survey asked a group of people the size of their households. the results are shown in the frequency distribution. what is the mean of the frequency distribution?

Answer 1

we have the following:

$m=\frac{f_1+f_2+f_3+f_4+f_5}{5}$

replacing:

$\begin{gathered} m=\frac{4+12+6+2+1}{5} \\ m=\frac{25}{5} \\ m=5 \end{gathered}$

therefore, the mean is 5