Covers the variance for a normally distributed random variable.
This video gives more detail about the mathematical principles presented in Variance of Normally Distributed Data.
This video shows how to work step-by-step through one or more of the examples in Variance of Normally Distributed Data.
Examines the statistical concept of standard deviation, which is used to characterize the spread of a distribution. The video also differentiates between sample standard deviations and population standard deviations and introduces the formulas.