Regression analysis
In many practical problems, it is often necessary to study the relationship between one interested factor and several other influencing factors. Correlation analysis only describes the strength and direction of the relationship between numerical variables, while regression analysis is a statistical method to describe more accurately how the change of one variable affects other variables through mathematical models. If you use
Represents a variable of real interest,
Indicates that others may be related to
Related variables need to be established.
and
Functional relationship between
. here
Is called a dependent variable or a response variable, andX is called an independent variable or explanatory variable. Regression analysis is the process of establishing this relationship.