THE WALDMAN COMPANY.

The article is a case study in the United States concerning the use of co-varying graphic methods in business. The study is focused on the car manufacturer, Waldman Company, which evaluated the potential effectiveness of a price reduction to stimulate sales. Under time constraints, the company's statistician compiled the corporate report based on the relation of net profits to the number of automobiles shipped. A composite plot to evaluate the statistics was constructed and the graphical method using co-varying factors was found to be effective.