Suppose That You Believe That a Quadratic Relationship Exists Between

Multiple Choice

Suppose that you believe that a quadratic relationship exists between the independent variable (of time) and the dependent variable Y.Which of the following would represent a valid linear regression model?

A) Y = b₀ + b₁ X, where X = time⁴
B) Y = b₀ + b₁ X⁴, where X = time
C) Y = b₀ + b₁ X, where X = time²
D) Y = b₀ + b₁ X², where X = time