Interaction - Windows software for graphing and analyzing statistical interactions

Registration

Registration is still only $5!

If you have already registered, and you need to retrieve your Registration Code to unlock your copy of Interaction, click here.

Why is registration only $5?
As a professor and research scientist, I know how frustrating the high prices of statistical software can be. While I believe that this program is worth far more than $5, I have decided to keep the registration costs low so that everyone who wants a copy can afford one -- even poor graduate students!

Register now!
Registration is accomplished using PayPal, so you know that your purchase is completely safe and secure! Your Registration Code will be available online immediately after confirmation of your purchase is received, allowing you to unlock Interaction instantly!

To register your copy of Interaction, simply enter your Product ID in the box below, and then click on the 'PayPal Buy Now!' button. You can register even if you don't have a PayPal account!

  • If you clicked on 'Register Now!' from the 'Help' menu within Interaction, then your Product ID may already be filled in as a convenience to you!

  • If you need help finding your Product ID, click here!

Product ID: - - -
Your Registration Code will be available here shortly after confirmation of your purchase is received -- usually within 5 minutes!

You may also be interested in my Free Statistics Calculators - over 50 free online statistics calculators are now available!