Answer

Industry ratios are an aggregate measure of industry performance gathered by analyzing data from the financial statements of hundreds of firms (both public and private).

Go to the NYU Business Library Industry page and select D&B Key Business Ratios

Print Resource in Bobst Library:
RMA Annual Statement Studies call number: HF5681.B2 R6
Contains composite financial data on manufacturing, wholesaling, retailing, service, and contracting lines of business. Arranged by NAICS code, this work makes it possible to compare one company’s performance relative to other companies in the same line of business.