Compute the mean absolute deviation $($MAD$),$ the mean squared error $($MSE$),$ the bias, and the mean average percent error $($MAPE$)$ for the following forecast. $($Note: the actual demand values

are designated by $a_t$ and the forecast values by $F_t).$

Click the icon to view the table of the actual observations and forecasted values for each period.

The mean absolute deviation $($MAD$)$ is

$($Enter your response rounded to one decimal place.$)$

The mean squared error $($MSE$)$ is

$($Enter your response rounded to one decimal place.$)$

The bias is

$($Enter your response rounded to one decimal place.$)$

The mean average percent error $($MAPE$)$ is

$($Enter your response rounded to two decimal places.$)$