1. Discuss the context in which can be analyzed by using a random-effects model.
2. What are the reasons for conducting a two-way analysis rather than two sep- arate one-way ANOVAs? Explain.
3. What are the limitations of two-way ANOVA? What problems may be encountered?
4. Suppose that a limited data set is available. Explain why it is not desirable to increase the number of factors under study (say, four-way ANOVA, ?ve-way ANOVA, and so on). Give two reasons for this-one of the rea- sons should be a statistical one.