Question: Please complete the question completely and step by step a) Plot the monthly sales data. b) Forecast January sales using each of the following: i)

Please complete the question completely and step by step

a) Plot the monthly sales data. b) Forecast January sales using each of the following: i) Naive method. ii) A 3-month moving average. iii) A 6-month weighted average using .1, .1, .1, .2, .2, and .3, with the heaviest weights applied to the most recent months. iv) Exponential smoothing using an =.3 and a September forecast of 18

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