Seasonal adjustment and trend-cycle estimation.

The article discusses the five main components of socio-economic time series from the Monthly Retail Trade Survey (MRTS) in Canada. Factors include the trend and cycle, which reflects the fundamental evolution of the series and the short-term transient movements, respectively. Another is the seasonal component, which represents fluctuations that recur more or less regularly from one year to the next. The Easter holiday effect variation is also being cited.