Preliminary Considerations for Time Series
Lyle David Broemeling · 2019
This chapter initiates the study of time series by presenting the necessary concepts that are essential for a good understanding of the subject. It begins with several examples of time series followed by techniques that will allow the investigator to understand the general characteristics of a time series. The first technique is to discern the general appearance of the series using plotting procedures, then from the plot form a subjective opinion of the trend of the series. More formal procedures using R will reveal the various components (e.g., trend and seasonality) of the series.