Problem 2: Aling Lourdes had the following sales in her small sari-sari store for the past 5 weeks: P 2, 500, P3, 000, P 2, 000, P3, 400, and P2, 800 respectively. Forecast her sale for the sixth week using a. Weighted average forecast b. Average forecast c. Exponential Smoothing if a = 35% and the previous forecast is 2,700.

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