This report provides a comprehensive analysis of the role of quantitative and qualitative research in modern marketing. It begins by defining quantitative research and its applications, with an emphasis on questionnaire design, including different question types such as Likert scales and ranking questions. The report addresses ethical considerations in research, like informed consent. It then explores qualitative research, contrasting it with quantitative methods and highlighting the importance of rich data collection through interviews and mystery shopping. The document also covers correlation and regression analysis, illustrating their use with practical examples. Finally, the report delves into time series analysis, explaining its types and applications in marketing. The report is structured to provide a clear understanding of each research method's importance and application within the marketing field.