ABSTRACT
This chapter concentrates on factorial experiments having only two factors and with a completely randomized design. A factorial experiment is one involving two or more factors of interest. For each factor all levels of the factor occur with all levels of every other factor in the experiment. Multiple comparisons can be performed in a variety of ways in a two factor factorial experiment. The major advantage of a factorial experiment is the ability to consider the effects of two or more factors at the same time. It can be less expensive to study factors in the same experiment rather than studying them separately. Factorial experiments provide a simple way to study the effects of two or more factors. It also provides an opportunity to check for the relationship between the factors, that is, to check for interaction.
