Exercise

# 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.

Instructions

**100 XP**

- 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`

.