Chapter 3 Multiple Linear Regression Model The linear …

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So it is a nonlinear model. vi) 23 y 01 2 3XX X is a cubic polynomial model which can be written as y 01 2 3 XX X 23 which is linear in the parameters 01 2 3,,, and linear in the variables 23 X12 3 XX X X X,,. So it is a linear model. Example:

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