This report delves into the roles of quantitative and qualitative research methodologies within the context of modern business. It defines and differentiates between quantitative research, which focuses on numerical data and statistical analysis to understand behaviors and attitudes, and qualitative research, which employs descriptive and non-numerical data rooted in social sciences to gain in-depth insights. The report also examines correlation and regression techniques, highlighting their utility in determining relationships between variables, as well as time series analysis for identifying trends in economic environments. It critiques the challenges associated with these techniques, such as dealing with raw data and the limitations of predicting future events based solely on past data. Ultimately, the report concludes that both qualitative and quantitative methods are vital for enhancing business decision-making by providing a comprehensive understanding of collected data.