Importance
It is important to know when analyzing a time series if there is a significant seasonality effect. The seasonal subseries plot is an excellent tool for determining if there is a seasonal pattern. The seasonal subseries plot can provide answers to the following questions:
- Do the data exhibit a seasonal pattern?
- What is the nature of the seasonality?
- Is there a within-group pattern (e.g., do January and July exhibit similar patterns)?
- Are there any outliers once seasonality has been accounted for?
Read more about this topic: Seasonal Subseries Plot
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