Marketing research is the process or set of processes that links the producers, customers, and end users to the marketer through information. wikipedia.org

"Qualitative researchers aim to gather an in-depth understanding of human behavior and the reasons that govern such behavior. The qualitative method investigates the why and how of decision making, not just what, where, when. Hence, smaller but focused samples are more often used than large samples." wikipedia.org

Survey methodology is the field that studies surveys, that is, the sample of individuals from a population with a view towards making statistical inferences about the population using the sample. wikipedia.org

Surveys are a standard tool for empirical research in social sciences, marketing and official statistics. Online (Internet) surveys can become a research tool for a variety of research fields, including marketing, social and official statistics research. wikipedia.org

Statistics is the study of the collection, organization, analysis, and interpretation of data. It deals with all aspects of this, including the planning of data collection in terms of the design of surveys and experiments. wikipedia.org

The use of statistical and mathematical techniques to analyze data. wikipedia.org

Marketing strategy is a process that can allow an organization to concentrate its limited resources on the greatest opportunities to increase sales and achieve a sustainable competitive advantage. wikipedia.org

SAS (originally Statistical Analysis System) is an integrated system of software products provided by SAS Institute Inc. that enables programmers to perform retrieval, management, and mining, report writing and graphics, statistical analysis, business planning, forecasting, and decision support... wikipedia.org