Question: A forecasting model is fitted to sales data over 24
A forecasting model is fitted to sales data over 24 months. Forecasting errors are tabulated to reveal whether the model provides an overestimate (1) or an underestimate (2) for each month's sales. The results are – – + + + – + – – + + – – – – – – + + + + + – –. Research question: At α = .05, is the pattern random?
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