Consider the following time series data. Week 1 3 4 Value 19 12 17 10 18 15 Using the naive method (most recent value) as the forecast for the next week, compute the following. (a) mean absolute error MAE = 6 (b) mean squared error MSE = 39.2 mean absolute percentage error (Round your answer to two decimal places.) MAPE = 48.44 X % (d) What is the forecast for week 7? 15

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