Testing Multiple Product Versions

Now let's look at another common situation. Suppose that you want to compare two different versions of a product, Version A and Version B to see which one shows more promise as your ultimate design. (These are known as different cond.t.ons,") Additionally, you want to see whether performance vanes for either of two user groups, call them supervisors and technicians

This will result in a 2 x 2 matrix design as shown in the following table