Introduction • Roles of quantitative market research in business • Efficient Questionnaire for research • Role of Qualitative research in Business • Efficient interview when conducting research • Correlation. Regression. And Time Series Analysis • Limitations of Correlation, regression • How to improve collecting Data (when the data is required to make business decisions) The role of quantitative research in modern marketing research and data analysis The role of quantitative research: Questionnaire design with examples of good practice The role of qualitative research in modern marketing research and data analysis The role of qualitative research. The Interview Discussion guide: design & use (with examples) Correlation & Regression: How & why, it is used - with examples Time series: What it is & how it is used - with examples Critique of issues surrounding the analysis techniques Correlation & Regression (focusing on Big Data & its use in business decision making) Critique of issues surrounding the analysis techniques Time series focusing on Big Data & its use in business decision making (focusing on Big Data & its use in business decision making) How data can be collected & used to make informed business decisions. Conclusion List of References