The following data show the average Home Price Index over a six$-$quarter period. Complete parts a through e below.

$\backslash$table$[[$Quarter$,$Q$12017,$Q$22017,$Q$32017,$Q$42017,$Q$12018,$Q$22018],[$Index$,183\mathrm{.}1,190\mathrm{.}8,195\mathrm{.}2,195\mathrm{.}2,197\mathrm{.}1,201\mathrm{.}2]]$

a$.$ Forecast the price index for Q$32018$ using a two$-$period simple moving average.

The forecasted price index is $199\mathrm{.}15.($Round to two decimal places as needed.$)$

b$.$ Calculate the MAD for the forecast in part a$.$

MAD $=4\mathrm{.}35($Round to two decimal places as needed.$)$

c$.$ Forecast the price index for Q$32018$ using a three$-$period simple moving average.

The forecasted price index is $($Round to two decimal places as needed.$)$

CALCULATE MAD FOR PART C