This article discusses the role of quantitative research in modern marketing research and its impact on data analysis. It explores the use of quantitative data collection methods, such as surveys and questionnaires, and highlights the importance of designing effective questionnaires in marketing research. The article also addresses ethical concerns in research questions and provides tips for creating good survey questions. Additionally, it discusses the development of tools for data collection and provides examples of primary data collection in different research contexts. Finally, the article explains the concepts of correlation analysis and regression analysis and their applications in marketing research.