The Regression Equation for a Categorical Variable with Four Categories

question 22

Multiple Choice

The regression equation for a categorical variable with four categories would be modeled as .

• A) Y^{^} = b₁ D_{1 +} b₂ D_{2 +} b₃D_{3 +} b₄D₄
• B) Y^{^} = b₁ D_{1 +} b₂ D_{2 +} b₃D₃
• C) Y^{^} _i = a + b₁ D_{1 +} b₂ D_{2 +} b₃D_{3 +} b₄D₄
• D) Y^{^} _i = a + b₁ D_{1 +} b₂ D_{2 +} b₃D₃

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