Answer:
Step-by-step explanation:
mean absolute deviation=(|x-mean|)/number of terms.
[tex]mean=\frac{ 15+17+15+17+21+23}{6}=\frac{108}{6} =18\\x ~ |x-mean|\\15 ~3\\17 ~ 1\\\\15 ~3\\17 ~1\\21 ~3\\23 ~5\\\sum=16\\mean~absolute~deviation=\frac{16}{6} =\frac{8}{3} =2 \frac{1}{3}[/tex]
