Problem
1) Perform PCA of the data.
2) Identify principal components that account for 80% of total variability.
3) State principal components as linear combination of given set of variables.
4) Explain how you will compute scores selecting one of the components.
The response should include a reference list. Using double-space, Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.