The data set presents a sample of properties in Melbourne, including information about price, condition, postcode, area and the number of bedrooms.

5.1. Develop a multiple regression model including all the variables to predict the price? Interpret the output of the regression model.

5.2. How much is the price of a new property with the postcode of 3003, area of 500 and 5 bedrooms? Is there anything concerning you?

5.3. Considering the developed model, which property provides the best investment opportunity? Present a detailed argument

5.4. Do you think a polynomial degree 2 multiple regression model can be a better model to represent the housing price? Justify your answer.