# 5: Z-scores and the Standard Normal Distribution

- Page ID
- 14473

- 5.1: Normal Distributions
- The normal distribution is the most important and most widely used distribution in statistics. It is sometimes called the “bell curve,” although the tonal qualities of such a bell would be less than pleasing. It is also called the “Gaussian curve” of Gaussian distribution after the mathematician Karl Friedrich Gauss.

- 5.2: Z-scores
- A z -score is a standardized version of a raw score ( x ) that gives information about the relative location of that score within its distribution.