QUESTION 27 An operation analyst is forecasting this year's demand for one of his company's products based on the following historical data: Year Quantity Sold Four years ago 10,000 Three years ago 12,000 Two years ago 18,000 Last year 20,000 What is this year's forecast using a two-year weighted moving average with weights of.7(for a year ago) and 3 (for 2 years ago)? Formula: WMA, WA i = 1 where Wi = the weight for period i (between 0 and 100%) i= an index that corresponds to age of the period n=number of periods (data points) in the moving average Ai = actual value in period / WMAN = n period moving average 19,400 18,600 19,000 11,400 10,600