Free reference · 596 entries
The words, before the course.
Short, plain definitions of the terms that turn up in statistics and data science — what they mean, and how they relate to each other. Nothing to sign in for.
2 of 596 entries under Z
- Z scores z = x – m , where x is the observation itself, m is the mean of the distribution, s is the standard deviation of the distribution If the symbols do not display properly, try the graphic version of this page
- Z score (Graphical)where x is the observation itself, is the mean of the distribution, is the standard deviation of the distribution
Ready to do it rather than read it?
Every course runs on a fixed start date with an instructor who marks your work, and selected ones carry a credit recommendation from the American Council on Education.