(Solution) - Consider the following 10 observations on the response variable y -(2025 Original AI-Free Solution)

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Academic Level: Undergrad. (yrs 3-4)

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Consider the following 10 observations on the response variable y and the explanatory variable x.

a. Plot the above data and then estimate the linear and the quadratic regression models.
b. Use the appropriate numerical measure to justify which model fits the data best.
c. Given the best-fitting model, predict y for x = 4, 8, and 12.
d. Find x at which the quadratic equation reaches a minimum or maximum.