If one is planning to use multiple regression to summarize how the variables X₁, X₂, X₃ explain the variation in Y, how many parameters are involved in estimating the linear regression? A) 2 B) 3 C) 4 D) 5

Question

Quizplus · Accepted Answer

For each predictor variable (X₁, X₂, X₃), we need to estimate a slope coefficient and there is also an intercept term. Therefore, the total number of parameters involved in estimating the linear regression is 4 (3 slopes + 1 intercept).

If One Is Planning to Use Multiple Regression to Summarize