Old car price a/ Question: Which factors affect the price of old car? In which direct these effects are? b/ Question: How can we predict the price of old cars? Which independent variables should we choose? Which type of model, polynomial or linear? Which score of fitness that we should consider, R-square or residual error?
Practices applied: 1/ Data wrangling 2/ Data analysis 3/ Building model 4/ Evaluating model 5/ Data visualization
Answer: 1/ Which variables affect the car price? 2/ Which variables can be used for car price prediction with high accuracy? 3/ Which models should be used, linear regression or multi-linear regression or polynominal ones?