what is a regression model

A regression model is a statistical model that estimates the relationship between one dependent variable and one or more independent variables using a line or a plane in the case of two or more independent variables. It is a way of mathematically sorting out which variables have an impact on the dependent variable. Regression analysis is a statistical method used for analyzing different factors that might influence an objective and determining which factors are important and which ones can be ignored. A linear regression is a model where the relationship between inputs and outputs is a straight line. Regression models can be used when the dependent variable is quantitative, except in the case of logistic regression, where the dependent variable is binary. Regression analysis can help determine the relationship between two variables or the value of the dependent variable at certain points of the independent variable. For example, regression analysis can help a car manufacturer determine order numbers based on external factors like the economy or environment.