Using the princomp function

In this exercise you will use the princomp() function to calculate the principal components (PCs) of a dataset. We will use the pca.state object created in this exercise throughout the rest of this chapter.

本练习是课程的一部分

Multivariate Probability Distributions in R

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练习说明

Calculate the principal components, and the scores of the PCs, of the state.x77 dataset based on the correlation matrix and store it as pca.state.
Provide a plot and print the summary of the principal component object.

交互式实操练习

通过完成这段示例代码来试试这个练习。

# Calculate PCs
pca.state <- princomp(___, cor = ___, scores = ___) 

# Plot the PCA object  
plot(___) 

# Print the summary of the PCs
summary(___)

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