Regression Diagnostics: Identifying Influential Data and Sources of CollinearityThe Wiley Interscience Paperback Series consists of selected books that have been made more accessible to consumers in an effort to increase global appeal and general circulation. With these new unabridged softcover volumes, Wiley hopes to extend the lives of these works by making them available to future generations of statisticians, mathematicians, and scientists. The title of the book more or less sums up the contents. It appears to me to represent