The Regression Equation for a Categorical Variable with Four Categories

question 28

Multiple Choice

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

• A) Ўi = a + b₁ D₁ + b₂ D₂ + b₃D₃
• B) Ў= b₁ D₁ + b₂ D₂ + b₃D₃
• C) Ў= b₁ D₁ + b₂ D₂ + b₃D₃ + b₄D₄
• D) Ўi = a + b₁ D₁ + b₂ D₂ + b₃D₃ + b₄D₄

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