# Statistical Concepts

Great 13-minute video that explains each level of measurement with multiple examples.

A blog post on formulas and detailed examples of the different central tendencies.

An easy-to-follow 12-minute crash course on measures of central tendency.

A 13-minute educational video giving an example of how to calculate range, variance, and standard deviation.

A simpler 12-minute video giving a crash course on measures of range, variance, and standard deviation.

A great blog post giving a simple informative look at the normal distribution.

An 11-minute video explaining the normal distribution in an easy-to-understand format.

A quick 5-minute video informative introduction on z-scores.

A basic blog post providing a written explanation of z-scores, including examples using the formulas.