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December 1994, Vol. 117, No. 12
Seasonality: economic data and model estimation
Economist, Office of Prices and Living Conditions, Bureau or Labor Statistics
Seasonality is a pattern that more or less repeats itself each year, although this pattern may drift or change in amplitude over time. The study of seasonality also is linked to the study of business cycles. This article explores the question of what seasonality is, examining the impact of weather, predictable and regular calendar events, and social conventions on seasonal variations in data.
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Seasonal adjustment of quarterly consumer expenditure series. December 1994.
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