Exercise

# Number of PCs for the state.x77 dataset

The `state.x77`

data is a matrix with 50 rows and 8 columns that includes the variables: `Population`

, `Income`

, `Illiteracy`

, `Life`

, `Exp Murder`

, `HS Grad`

, `Frost`

, and `Area`

for each of the 50 states in the United States. You can use the console to explore the data.

If you perform PCA on the full dataset, how many PCs will you get?

Instructions

**50 XP**

##### Possible Answers

- 3 principal components.
- 7 principal components.
- 8 principal components.
- 50 principal components.