Weisberg, Herbert I. Bias and causation: models and judgment for valid comparisons/ Herbert I. Weisberg - xv, 348 pages: illustration; 23cm - Wiley series in probability and statistics . - Wiley series in probability and statistics . Includes bibliographical references and index ISBN: 9780470286395 Subjects--Topical Terms: Discriminant analysisPaired comparisons (Statistics) LC Class. No.: QA278.65