Comparable to linear models, a component in principal component analysis (PCA) can be described as an equation. Which of the following equations is the correct representation of a component in PCA?
A. Component i = b 0 + b 1 Variable 1 i + b 2 Variable 2 i + . . . + b n Variable n i
B. Component i = b 1 Variable 1 i + b 2 Variable 2 i + . . . + b n Variable n i
C. Component i = b 0 + b 1 Variable 1 i + b 2 Variable 2 i + . . . + b n Variable n i + ? i
D. All of these are incorrect because components in PCA cannot be represented as an equation.
Answer: B
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