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.
Cet exercice fait partie du cours
Multivariate Probability Distributions in R
Instructions
- 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.
Exercice interactif pratique
Essayez cet exercice en complétant cet exemple de code.
# Calculate the correlation matrix
cor.wine <- ___
# Round the matrix to two decimal places
___
# Plot the correlations
corrplot(___, method = "ellipse")