Progress in engineering and the physical sciences, agriculture and the biological sciences, and to some extent social science, depends on experiments. The design of such experiments is crucial. If they are poorly designed they will be inefficient and may lead to misleading conclusions. Nevertheless, many investigators and researchers in industry and universities are expected to design and analyze their own experiments. Even if investigators do have access to statistical advice, they will be expected to have some basic knowledge of the issues. This book aims to help. Covering all the most commonly used designs of experiments, the methods and the potential pitfalls are described in clear English. The techniques are introduced with case studies of practical significance. The cases are based on real experiments but are described in the context of three fictitious organizations: an engineering company, SeaDragon; a pharmaceuticals and chemicals manufacturer AgroPharm; and the Department of Social Studies at the University of Erewhon. All technical terms are defined and the mathematical development is restricted to that which is needed to use MINITAB.
What I like about this book is that that it is written in plain English and has plenty of valuable illustrations, so it is easy to understand. It takes the reader through the forty-six case studies along such a structured, simple-to-complex, road that even those with little basic knowledge will learn much about both the use of Minitab and the design of effective experiments.
Whether working in a research establishment or in a business or industrial environment, most of us will have experienced the inefficiency of intuitive, trial and error, management. Occasionally, a truly amazing solution to a problem will be discovered first time, but this is often more by luck than judgement.
Designing your "experiment" allows you to arrive at a very good design before you embark upon the expense of trying out your solution.
Working through this book took very little effort, and I actually enjoyed the experience! Moreover, I felt that by the time that I turned the last page, I had learnt a great deal. Whatever your starting level, I am sure that you would be able to say the same if you take the time to work through the book for yourself.