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lows: 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 : with the heaviest weights applied to the most recent munth. iv) Exponential smoothing using an =.3 and a Septecic: forecast of 18. v) A trend projection. c) With the data given, which method would allow you to form: next March's sales? Px