SPSS data Analysis-Multiple linear regression

Source: Internet
Author: User

Only one independent variable and the linear regression of the dependent variable are called simple linear regression, but in fact, such a simple relationship in the real world almost does not exist, all things are interconnected, a problem must be produced by a number of factors combined effect of the results.

For linear regression with multiple independent variables and a dependent variable called multiple linear regression, some data are called multivariate linear regression, but I think the meaning of the plurality should be the true dependent variable rather than the independent variable, and the multi-collinearity is also generated for multiple independent variables, so I still agree that it is called multiple linear regression.

The multiple linear regression is similar to the applicable condition and simple linear regression, and is also the linear relationship between the independent variable and the dependent variable, the residual variance of the residuals, the residuals are normally distributed, but because the independent variables are more than 1, it is also necessary to require that there is no correlation between the independent variables, that is, there is no multiple collinearity. However, there is no relevant two variables that are not present, so the conditions are relaxed to be acceptable as long as they are not strongly correlated.

Multiple linear regression in the process of SPSS and simple linear regression, just the content of a few more, and because of the more information, it is recommended to set the analysis steps, the commonly used steps for
1. Plot scatter plots to determine if there is a linear trend
2. Preliminary modeling, including setting variable selection methods
3. Residual analysis, analysis of the residual error after modeling the normality, independence, variance homogeneity and other issues
4. Strong impact point and multi-collinearity judgment
5. Revise the model based on the above analysis and repeat 3-4 until the model achieves optimal results.

ANALYSIS-Regression-linear












SPSS data Analysis-Multiple linear regression

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.