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?

SPSS Modeler

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

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?