Chapter 13 Principal Component Analysis

Corresponding reading: PMA6 Ch 14

More nomenclature tidbits: It’s “Principal” Components (adjective), not “Principle” Components (noun)

From Grammerist:

As a noun, principal refers to (1) one who holds a presiding position or rank, and (2) capital or property before interest, and it’s also an adjective meaning (3) first or most important in rank

Principle is only a noun. In its primary sense, it refers to a basic truth, law, assumption, or rule.

This third definition (3) is the context in which we will be using this term.