Regression analysis is a statistical method used to examine the relationship between one dependent variable and one or more independent variables. The goal of regression analysis is to model the relationship between the variables, predict the value of the dependent variable based on the independent variables, and identify which independent variables have a significant impact on the dependent variable. There are several types of regression analysis, including linear regression, logistic regression, and multiple regression, each used for different types of data and research questions. Regression analysis is commonly used in various fields such as economics, finance, psychology, and social sciences to understand and make predictions based on data.