Why does installing Prism Mac need admin privileges?

The whole point of having different privileges for users vs. admins is to prevent non admins from making major changes to the system. Installing software is considered a major change. 

The Prism 5 Mac installer needs access to these folders:

/Applications
/Library/Automator
/Library/Spotlight
/Library/QuickLook
/Library/Application Support/ (GraphPad/Prism/5/...)

The first time it runs, Prism also needs admin rights to create the registration file(s). 

After that first launch, admin rights are no longer needed to use Prism.