The Regression Equation for a Categorical Variable with Four Categories

question 17

Multiple Choice

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

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