Door-to-Door Survey is a survey where the interviews are conducted in pre-selected areas involving knocking on the doors of homes to find qualified respondents.
DK (Don’t Know) is the abbreviation recorded when a respondent lacks the knowledge to provide an answer to a question.
Distribution Check is a check and recording of the availability of specific items in stores.
Disqualifier is an answer to a question that makes the respondent ineligible to participate in the research project.
Discussion Guide is an outline of the subjects to be discussed during group discussions and/or in-depth interviews.
The deviation is the difference between the mean and an observed value.
Desk Research is the systematic examination of all available secondary data in the context of a particular marketing research problem.
Design: see research design.
Depth Interview: see the in-depth interview.
Demographic Information is based on the age, gender, life-cycle stage, income, and occupation of consumers.