How strong is the association between the verbal and the math scores?Here is another scatterplot.The dataset consists of (city,highway) mileage pairs for 35 vehicles.What kind of association is there here?Is it stronger than the SAT data? Why?How do you know there is association?
Linear AssociationThe two scatterplots we have seen so far are examples of variables that exhibit linear association: the tendency to follow a line.
Which relationship is weakest? Strongest? Are they all linear?
Do we get the same or different covariance between temperatures and heating costs?How is that possible? Standardize both :?)Does the picture of Xvs Ylook different from Xvs Y?r