You need to be signed in for the course navigation features on this site to work. Sign in »


Welcome (back)!

All of the Creative Commons tools on this site are free. We just ask that you sign in / sign up using one of your existing social accounts:


This will take you to their secure sign in tools - we'll never see your password and you don't have to create and remember yet another one.

That said, we will receive your name and email address from them as well as any other profile information you approve for them to share.

And, by signing in, you are agreeing to our full terms of use (including privacy policy and license agreement) found here.


close-link

When you looked at the parametric least squares equations, you were actually doing what we call error propagation, even if you didn’t realize it.

This topic uses what you’ve already seen to introduce you to the notion of propagating errors / uncertainties. This is another thing you’ll build on in future courses. My goal is to give you a good starting point and some of the basic skills.