1. What is meant by a designed experiment?
2. "A factor level is the same as a treatment." Is this statement always true? If not, what conditions are neces- sary for it to be true?
3. What is necessary for an experiment to be "balanced"?
4. Explain the basic role that between-sample variation and within-sample variation play in carrying out an analysis of variance.
5. Differentiate between the independent and depen- dent variables in an experiment.
6. A university president collects data showing the number of absences over the past academic year for a random sample of 6 professors in the College of Engineering. She does the same for a random sample of 9 professors in the College of Business and for a random sample of 8 professors in the College of Fine Arts. Does this represent a designed experiment? Explain.