Читать книгу Statistics and Probability with Applications for Engineers and Scientists Using MINITAB, R and JMP - Bhisham C. Gupta, Irwin Guttman - Страница 15

We discuss the concept of a designed experiment with an example, “Development of Screening Facility for Storm Water Overflows” (taken from Box et al., 1978, and used with permission). The example illustrates how a sequence of experiments can enable scientists to gain knowledge of the various important factors affecting the problem and give insight into the objectives of the investigation. It also indicates how unexpected features of the problem can become dominant, and how experimental difficulties can occur so that certain planned experiments cannot be run at all. Most of all, this example shows the importance of common sense in the conduct of any experimental investigation. The reader may rightly conclude from this example that the course of a real investigation, like that of true love, seldom runs smoothly, although the eventual outcome may be satisfactory.