Here are the answers to some of the questions that we’re most frequently asked. If the answer to your question isn’t here then please use the form on the right to send us your question and we’ll get back to you with an answer as quickly as we can.

If you are an existing customer with a support contract then please contact customer support.

SPSS Statistics

How do I know which SPSS modules I have installed?
How do I update my SPSS licence activation code?
How do I change the language in SPSS?
How do I transfer my SPSS licence to another PC?
What’s new in version 25 of SPSS?
How do I upgrade to version 25 of SPSS?
What’s the difference between the various licence types?
Can I try SPSS Statistics for free?
How can I activate my SPSS licence without internet access?
How can I combine variables in SPSS Statistics?
How can I reverse a scale in SPSS Statistics?
How can I calculate with dates in SPSS Statistics?
How can I check my data for normality in SPSS Statistics?
How can I recode my data in SPSS Statistics?
How can I create grouped or banded variables in SPSS Statistics?
How do I merge files in SPSS Statistics?
How can I change the appearance of my output in SPSS Statistics?
How can I select cases in SPSS Statistics?

Statistics

How do I choose the correct statistical test? 
What’s the difference between the various types of statistical models?
What is a chi squared test and when would I use it?
What is correlation and when is it useful?

SPSS Modeler

Which version of SPSS Modeler do I need?
Can I try SPSS Modeler for free?