This report delves into the crucial role of data insights in modern marketing research. It examines both quantitative and qualitative research methodologies, including questionnaire design, interview guides, and their practical applications. The report explores correlation and regression analysis, as well as time series analysis, explaining their uses and providing examples. It critically assesses the limitations of these analysis techniques, particularly in the context of Big Data and its impact on business decision-making. The report also covers data collection methods, including primary and secondary sources, and how this data can be used to inform strategic business decisions. The conclusion emphasizes the importance of data insights for strategic decision-making and highlights the key findings of the study, including the roles of quantitative and qualitative research, the use of correlation, regression, and time series analysis, and data collection methods. Finally, the report includes a list of references.