The authors show how to apply statistical methods to a variety of business situations. Topics covered include probability and hypothesis testing, random variables, polls and sampling, multiple linear regression, analyzing business data, decision theory, and more. The newly expanded and updated. Business Review books are designed for classroom use, but are also valuable as self-teaching volumes for businesspersons engaged in various fields. When used in college business courses, these titles make fine supplements to main textbooks. Instructors in adult education and brush-up programs often choose these books as their main classroom text. Each title includes review questions with answers.