In the field of finance, a regression analysis is a statistical tool that examines the relationship between two variables - one being the dependent variable and the other, the explanatory variable. This method is commonly used to understand how changes in one variable affect the other. By studying this relationship, we can gain valuable insights into the dynamics of financial data and make informed decisions. So, don't be intimidated by the term "regression analysis" - it's simply a powerful tool to help us understand the world of finance.