When average, trend, and seasonality are removed from the data, random variations are what remains.
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Q44: There is one type of seasonal variation.
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Q48: Linear regression works both for time series
Q50: Forecast error is the same as residuals.
Q51: CPFR stands for "collective planning, forecasting, and
Q52: We usually associate the word "seasonal" with
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Q54: Time series analysis is based on the
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