Search Course Communities:
This video lecture introduces the definition of expected value and does a discrete example. Then the definition of variance is given, and properties are discussed, including the variance of a linear function of a random variable.
Course Topic(s): Probability | Expected Value, definition and basic properties
Video from Khan Academy. An introduction to expected value. It starts with the arithmetic mean and develops expected value for a discrete distribution. Shows that the formula for expected value is the same as the population mean.
To rate this resource on a 1-5 scheme, click on the appropriate icosahedron:
Creator(s): Khan Academy
Contributor(s): Khan Academy
This resource was cataloged by Lisa GreenPublisher:
Resource copyright: Creative Commons
This review was published on October 10, 2012
Be the first to start a discussion about this resource.