Mathematics · Time Series & Forecasting
A company uses a multiplicative time series model to forecast sales. The linear trend equation is Trend = 400 + 10T, where T = 1 denotes Q1 20X6, T = 2 denotes Q2 20X6, etc. Average seasonal variations: - Q1: -30% - Q2: +40% - Q3: +10% - Q4: -20% What is the sales forecast for the third quarter of 20X7 (T = 7)?
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