(1) Please estimate a linear production function using the data provided (excel file named "wheat yield") for wheat yield ( kg/ha ) and Nitrogen (N) usage (kg/ha). You need to visualise the linear production function with the production equation and model fitness shown on the graph. (4 marks) (2) Now re-estimate the production function in a quadratic form using the same data provided. As it is in (1), you need to visualise the quadratic production function with the quadratic equation and model fitness on the graph. (4 marks) (3) Which model suits the data best? Simply explain why. (1) Please estimate a linear production function using the data provided (excel file named "wheat yield") for wheat yield ( kg/ha ) and Nitrogen (N) usage (kg/ha). You need to visualise the linear production function with the production equation and model fitness shown on the graph. (4 marks) (2) Now re-estimate the production function in a quadratic form using the same data provided. As it is in (1), you need to visualise the quadratic production function with the quadratic equation and model fitness on the graph. (4 marks) (3) Which model suits the data best? Simply explain why