一般默认的是enter,你只要选stepwise即可。

若你还不会操作，请用help搜索stepwise !

非常简单的哦哈哈

SPSS Web Books
Regression with SPSS
by Xiao Chen, Phil Ender, Michael Mitchell & Christine Wells (in alphabetical order)

Book Chapters (also see short outline)

• Section 1: Regression Concepts
  • Chapter 1 - Simple and Multiple Regression
  • Chapter 2 - Regression Diagnostics
  • Chapter 3 - Regression with Categorical Predictors
• Section 2: Categorical Coding and Interactions in Depth
  • Chapter 4 - Beyond Ordinary Least Squares Regression (under development)
  • Chapter 5 - Additional coding systems for categorical variables in regression analysis
  • Chapter 6 - More on interactions of categorical variables in regression analysis (under development)
  • Chapter 7 - More on interactions of continuous and categorical variables in regression analysis (under development)
  • Chapter 8 - Interactions of continuous variables in regression analysis (under development)