Exercise

# Calculating the correlation matrix

A correlation matrix is a generalization of the concept of correlation between two variables. If you are looking at a large number of variables, it can also be useful to visualize the correlation matrix to understand the dependence of the variables on each other.

Instructions

**100 XP**

- Find the correlation matrix of the Alcohol, Malic, Ash, and Alcalinity variables from the wine data.
- Round the values of the correlation matrix to two decimal places.
- Use the
`corrplot()`

function to visualize the correlation matrix.