I'm reading a research paper where it says. Here $m$ is the periodicity of the data (e.g., 12 for monthly series).
I understand:
- There are twelve months in a year. So I suspect periodicity relates to the max value of the period before it resets.
Questions:
- What is the exact definition of periodically of data?
- How do you calculate it?
- What would the periodicity of a yearly series be?