Focus group interviewing is

Personal interviewing that involves inviting six to ten people to gather for a few hours with a trained interviewer to talk about a product, service, or organization The systematic design, collection, analysis, and reporting of data relevant to a specific marketing situation facing an organization.

Marketing research to gather preliminary information that will help define problems and suggest hypotheses.

Electronic monitoring systems that link consumers' exposure to television advertising and promotion $($measured using television meters$)$ with what they buy in stores $($measured using store checkout scanners$).$