first we find the mean
[tex]\bar{x}=\frac{445+380+365+375+370+315}{6}=\frac{2250}{6}=375[/tex]then we find the mean absolute deviation
[tex]\begin{gathered} D_{\bar{x}}=\frac{|445-375|+|380-375|+|365-375|+|375-375|+|370-375|+|315-375|}{6} \\ D_{\bar{x}}=\frac{70+5+10+0+5+60}{6} \\ D_{\bar{x}}=\frac{150}{6}=25 \end{gathered}[/tex]answer: the mean absolute deviation is 25
