Consider the model shown in Table $15\mathrm{.}1$ of the textbook. In the Productivity dataset,

the dependent variable is Productivity, and the independent variables are labeled,

respectively, Teamwork, Jobknowl, Jobauthr, Wrkdyssk$,$ and Recogawd. After you

rerun the model shown in Table $15\mathrm{.}1,$ create dummy variables for each of the four

departments, and add to the model dummy variables for the first three departments.

Are departments associated with employees$$ perceptions of productivity controlled for all other factors of the model? If yes, which departments are significantly associated with employees$$ perceptions of productivity? Record your answers on a separate sheet.