The American Customer Satisfaction Index (ACSI)

The American Customer Satisfaction Index (ACSI) is a national economic indicator of customer evaluations of the quality of products and services available to household consumers in the United States. The ACSI uses data from interviews with roughly 70,000 customers annually as inputs to an econometric model for analyzing customer satisfaction with more than 300 companies in 43 industries and 10 economic sectors, including various services of federal and local government agencies.