Question: spss how to combine variables?
Answer: Pull Up Data. Go to "File" in the tool bar at the top of the page in SPSS. ... 
Add Variables Together. Click the "Transform" menu at the top of the window and select "Compute" from the drop-down menu to open the Compute Variable dialog box. ... 
Multiply Variables. Go to "Transform" in the tool bar at the top of the SPSS page.