A focus group involves bringing together a small group of people to discuss strengths and weaknesses of a brand or product. It is important to determine what information is needed from the focus group and hire a skilled moderator to facilitate discussion and draw out the desired information. Participants should be chosen through stratified or quota sampling to represent the target demographic. Qualitative research gathers descriptive information through open-ended questions to provide richer insights, while quantitative research uses numerical data from surveys and questionnaires that can be more easily analyzed at scale.