Lecture video for “Data Sense: An Introduction to Statistics for the Behavioral Sciences” by Barton Poulson. This video covers Chapter 05: z-Scores, Section 05: The Standard Normal Distribution. It explains how the standard normal distribution – that is, a bell curve that has been transformed into z-scores – can be used to determine proportions and probabilities for inferential statistics. The book and complete set of videos may be purchased at http://kendallhunt.com/poulson/.