The monthly mean and volatility
You have now created month to month returns for the S&P 500. Next, you will need to do a descriptive analysis of the returns.
In this exercise, you will calculate the mean (arithmetic and geometric) and volatility (standard deviation) of the returns. These returns are available in your workspace as the variable sp500_returns.
Cet exercice fait partie du cours
Introduction to Portfolio Analysis in R
Instructions
- Compute the arithmetic mean value of the return series.
- Compute the geometric mean value of the return series using
mean.geometric(). - Compute the standard deviation of the return series.
Exercice interactif pratique
Essayez cet exercice en complétant cet exemple de code.
# Compute the mean monthly returns
# Compute the geometric mean of monthly returns
# Compute the standard deviation