Q: “A general question: You are writing a book — in one chapter, you wish to include information that you have used in another book with another publisher. What is the rule of thumb — if there is one — about how much information can be used and/or the level of changes necessary?”

A: Jay Devore, Professor Emeritus, Department of Statistics, Cal Poly State University, San Luis Obispo:

“I’ve been thinking about this issue because a colleague and I are thinking about collaborating on a business statistics book (introductory statistics for a business audience). I have written statistics books for engineers and also for a general audience — 4 in total, all published by Thomson. But Thomson (actually their subsidiary Southwestern) already has a full stable of business stat books, so may not be interested in publishing another one.