J.D. Power collects its information through a series of surveys, questionnaires and interviews with customers and consumers that have a familiarity with a certain product. These may take the form of phone calls, Web forms, in-person interviews or mail-in surveys.
One method the company uses to collect data is interviewing by phone, wherein a representative calls a consumer and asks a series of questions regarding her familiarity and satisfaction of a product on a numerical scale. The company also conducts similar surveys through websites and email forms, which allow the customer to respond at her leisure. The company then collects all the empirical data and forms several ratings that judge how happy consumers are with the item, the frequency of issues per 100 instances of the product, and the ease of use for the items.
J.D. Power is a business branch of McGraw Hill Financial, which serves as a market research and rating entity for products ranging from automobiles and health care to financial services and electronics. It creates its rating through comprehensive data sets that it collects from real consumers who have actual experience with the product, rather than conducting random sampling or opinion polls. As such, J.D. Power works with manufacturers and service providers to identify the appropriate customers and reach out to see if they wish to participate in the process.