題組內容
2. Y=β0+β1•X1+β2•X2 +β3•X3 +εis a multiple linear regression model with Y being the response variable, βk the k-th regression coefficient, andXk the k-th predictor. Please answer the following questions (25 分):
2. Y=β0+β1•X1+β2•X2 +β3•X3 +εis a multiple linear regression model with Y being the response variable, βk the k-th regression coefficient, andXk the k-th predictor. Please answer the following questions (25 分):