Screening designs are some of the most popular designs for industrial experimentation. They examine many factors to see which have the greatest effect on the results of a process.
Screening designs generally require fewer experimental runs, which is why they cost less. Thus, they are attractive because they are a relatively inexpensive and efficient way to begin improving a process.
Often screening designs are a prelude to further experiments. It is wise to spend only about a quarter of your resource budget on an initial screening experiment. You can then use the results to guide further study.
The efficiency ...