Dr. Chris is a chiropractor and treats patients from her home office. The following data represent the number of patients that Dr. Chris treated over the past six days.
Day Patients
1 .............................................9
2 .............................................11
3 ............................................10
4 ............................................12
5 ..............................................8
6 ..............................................7
A. Calculate the mean absolute deviation using exponential smoothing with trend adjustment with α = 0.7 and β = 0.8.