関連ワード:  how to combine two variables in spss    how to merge two variables in spss    how to add two variables in spss    how to combine multiple variables in spss    how to combine two categorical variables in spss    how to combine two string variables in spss    how to combine two numeric variables in spss    how to combine two nominal variables in spss    how to add multiple variables in spss    how to combine two variables into one in spss