Suppose that sales of a household appliance are reported to be 13,000 units during the first quarter of the year. The seasonal index for the first quarter is 1.24.
A.
A forecast of sales for the entire year is: 13000/1.24 x 4= 41935.484
B.
If a ctual sales for the year were 42,000 units, the percentage error for the year is 0.15%
C.
If a ctual sales for the year were 42,000 units, the percentage error for the year is -23.8%
D.
A forecast of sales for the entire year is: 13000 x 4= 42000