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Perform a Trend and Seasonal analysis with the following data. Include the trend formula and the multiplicative indices for the seasons. Using the model forecast

Perform a Trend and Seasonal analysis with the following data. Include the trend formula and the multiplicative indices for the seasons. Using the model forecast sales for the next year (all 4 seasons of year 4). (20 points) Year Season Sales 1 sp 140 1 su 50 1 w 130 1 f 520 2 sp 200 2 su 110 2 w 190 2 f 550 3 sp 260 3 su 220 3 w 210 3 f 570

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