troductory (Statistical Methods in Practice) course.РOur courses and course material have greatly benefited from the knowledge andРexperience of our lecturers: Derrick Chamberlain (ex ICI), Dave Hudson (ex Tiox-Рide), Sandy MacRae (University of Birmingham), Martin t (MJM Consul-Рtants), Alan Moxon (ex Cadbury), Ian Peacock (ex ICI), Joyce Ryan (ex ColgateРPalmolive), Colin Thorpe (ex GE), Malcolm Tillotson (ex Huddersfield Poly-Рtechnic), Stan Townson (ex ICI), Sam Turner (ex Pedigree Petfoods) and BobРWoodward (ex ICI). In particular, we would like to acknowledge John HendersonР(ex Chemdal) who wrote the Excel-based software Crunch which is used through-Рout the book and Michelle Hughes who so painstakingly turned our notes intoРpractical pages.Р Dick BoddyР Gordon SmithР Email: s4i@Р 2009