The operator of flight school wishes to forecast number of students for coming year so that he can contract for fuel, instructors, A/C, etc. School has been in operation for one year. Enrollment data for that year, starting in January is presented below.
a. From among three month moving average, four month moving average, trend, and seasonally adjusted trend, selected a method which seems to best forecast monthly enrollments for next year, suppose that flight school may grow unbounded.
b. Describe and justify method used for forecast. 40 42 48 52 56 60 61 61 56 56 55 54 2.