The actual number of patients at XYZ Medical Clinic in the past $20$ months were shown the Excel file called DATAPATIENTS$-3-$F$23.$

You would like to find a reasonable model to forecast the number patients in the clinic every month.

At the moment. you plan to generate the monthly forecasts using a $9-$month moving average method.

Afterwards, you want to calculate the values of MAD, MSE, and MAPE.

You do not need to show your calculation steps but you must show the following values:

MAD, MSE, MAPE, and forecasts of the number of patients in month $20$ through month $24.$

The number of patients at XYZ Medical Clinic in the past $20$ months were as follows:

$\backslash$table$[[$Month$,$Patients$],[1,287],[2,270],[3,234],[4,227],[5,292],[6,227],[7,219],[8,332],[9,299],[10,224],[11,242],[12,201],[13,263],[14,269],[15,229],[16,308],[17,323],[18,252],[19,303],[20,230]]$