Answer to Question #242487 in Statistics and Probability for tsa

Question

Describe the four components of time series analysis

Answer 1

The four components of time series analysis are:

• Secular trend, which describe the movement along the term;
• Seasonal variations, which represent seasonal changes;
• Cyclical fluctuations, which correspond to periodical but not seasonal variations;
• Irregular variations, which are other nonrandom sources of variations of series.