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.