$\backslash$table$[[$Period$,1,2,3,4,5,6,7,8,9,10,11,12],[$Sales$,576,611,653,735,673,635,725,724,725,719,684,750]]$

$($i$)$ Obtain the exponential smoothing forecast.

The forecest for week $13$ is $($Enter your response rounded to the nearest whole number.$)$

Specify the mean absolute deviation $($MAD$)$ and mean absolute percent error $($MAPE$).($Enter your responses rounded to two decimal places.$)$

$\backslash$table$[[$MAD$,$MAPE$],[2,33\%$