Regression Equation 1 estimated units sold using 4 explanatory variables and has an R² = 0.83 and an Adjusted R² = 0.81. Regression Equation 2 estimated units sold using 10 explanatory variables and has an R² = 0.86 and an Adjusted R² = 0.77.

a)

Equation 1 is a better fit because of a lower R² than for Equation 2

b)

Equation 1 is a better fit because of a higher Adjusted R² than for Equation 2

c)

Equation 2 is a better fit because of a higher R² than for Equation 1

d)

Equation 2 is a better fit because of a lower Adjusted R² than for Equation 1

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