Best regression model?

[shokstar]

In our SAC we had data that involved 165 sets of data. We created 3 different models, each with 9 sets of data, that had one with all types of student included, public transport students only, and private transport people only. It then asks us which one of those is the best regression model.

What would we have to consider? Is it the one that is most linear that is the best? What do we have to consider when answering the question?

[zzzzzz]

Wouldn't u have to sketch the residual plots and find coefficient of determination for each of em

residual plot - more randomness and no clear pattern indicates linearity

coefficient of determination - the higher it is the better the linear model