Regression analysis is a powerful statistical technique used to identify cause and effect relationships between variables. It is commonly used in business to explain the behavior of one variable based on the behavior of another. For example, a company may use regression analysis to understand how changes in prices or marketing campaigns affect sales. Regression analysis can also be used to predict future outcomes based on existing data. By understanding how two variables are related and how changes in one impact the other, businesses can make better decisions that lead to more profitable outcomes.