Transcription of Chapter 469 Decomposition Forecasting - NCSS
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Chapter 469 Decomposition Forecasting - NCSS
NCSS Statistical Software 469-1 NCSS, LLC. All Rights Reserved. Chapter 469 Decomposition Forecasting Introduction Classical time series Decomposition separates a time series into five components: mean, long-range trend, seasonality, cycle, and randomness. The Decomposition model is Value = (Mean) x (Trend) x (Seasonality) x (Cycle) x (Random). Note that this model is multiplicative rather than additive. Although additive models are more popular in other areas of statistics, forecasters have found that the multiplicative model fits a wider range of Forecasting situations.
Chapter 469 Decomposition Forecasting Introduction Classical time series decomposition separates a time series into five components: mean, long-range trend, seasonality, cycle, and randomness. The decomposition model is Value = (Mean) x (Trend) x (Seasonality) x (Cycle) x (Random).
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