The data in Table 25 represents the sales for each quarter during four different years, Compute seasonal indices and find the reseasonalized forecast by applying exponential smoothing for each year and each quarter (a=0.5 and Fo = 80). 1 Table 25: Sales Data Year Quarter Sales 77 2 88 3 92 4 80 2 1 78 2 90 3 94 4 78 3 109 2 128 3 130 4 118 4 103 2 136 3 141 123 1