Hi,
We are trying to do a linear regression to see whether chain affiliation has an influence on quality. In order to do a linear regression multiple assumptions need to be fulfilled, one of those is linearity. We wanted to consider linearity by making scatter-plots, however we have categorical independent variables so we don't know how we can see if this is linear or not... Anyone any suggestions?
We are trying to do a linear regression to see whether chain affiliation has an influence on quality. In order to do a linear regression multiple assumptions need to be fulfilled, one of those is linearity. We wanted to consider linearity by making scatter-plots, however we have categorical independent variables so we don't know how we can see if this is linear or not... Anyone any suggestions?