Joanne is the human resources manager of the University of Barcelona, Spain. She is interested in determining the effect of an academic degree (bachelor’s, master’s, and doctorate) on salary. She is considering the employees, of different gender, from three different faculties which are the Economics and Business, Mathematics and Computer Sciences, and Fine Arts.
a. What is the treatment variable in an experimental design for the above situation? Why?
b. What are the blocking variables in the experimental design? Why?
c. Use the answers in parts a and b to create an experimental design model for Joanne that clearly defines the variables used in the model.