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Scores are reported on a scale of 0 to 100.

The source provides the following information: " Customers are asked to evaluate their recent experiences with the largest companies in terms of market share, plus an aggregate category consisting of “all other”— and thus smaller—companies. ACSI survey data are used as inputs to the Index’s cause-and-effect econometric model, which estimates customer satisfaction as the result of the survey-measured inputs of customer expectations, perceptions of quality, and perceptions of value. The ACSI model, in turn, links customer satisfaction with the survey-measured outcomes of customer complaints and customer loyalty. ACSI clients receive confidential industry-competitive and best-in-class data on all modeled variables and customer experience benchmarks."