New Normal Instructional Videos

Introducing a brand new series of videos to cover those second-semester questions that students might be too afraid to ask.  I started with the one I get most often: what is a z-score?!  If you or your students have other questions they want answered, please leave them in the comments!

I was so excited to make this Stats Express video because I've had the idea in my head for years!  Standard deviation is not a super intuitive idea like median or mode.  Maybe you will find this video useful the next time a student (or friend or colleague) asks you what standard deviation even is anyway.