Determining periodicity

The idea of periodicity is pretty simple: With what regularity does your data repeat? For stock market data, you might have hourly prices or maybe daily open-high-low-close bars. For macroeconomic series, it might be monthly or weekly survey numbers.

xts provides a handy tool to discover this regularity in your data by estimating the frequency of the observations - what we are referring to as periodicity - using the [periodicity()](https://www.rdocumentation.org/packages/xts/topics periodicity) command

In this exercise, you'll try this out on a few sample data sets. In real life you might find yourself doing this as a first step to understanding your data before diving in for further analysis.

Calculate the periodicity of the temps data set.
Calculate the periodicity of the edhec data set.
Convert the edhec data to yearly periodicity using to.yearly(). Call this edhec_yearly.
Calculate the periodicity of edhec_yearly.

Exercise

Determining periodicity

Instructions