Resources Title Organisation Description Ref Exam Solutions This resource consists of three videos that cover this topic area. The first 5.04a video demonstrates how to calculate E(X) and E(aX +b) from a probability distribution for a discrete random variable. The second video demonstrates how to calculate the variance and the third video shows how these rules work. Brilliant This resource covers some abstract and real world examples deriving the 5.04a properties of expectation. The examples reveal worked solutions when buttons are clicked. There are some higher level concepts covered here. The resource is free but a login may be required. INNotNovak This is a short video demonstrating how to calculate the mean and 5.04a variance of a linear combination of two normal random variables. Penn State This resource includes introductory notes and examples in context. 5.04a and 5.04b Mrs This video covers the concepts of multiples of Normal Random Variables 5.04b O’Gram’s Maths with a full explanation and a worked example.
Resources Title Organisation Description Ref Exam Solutions This resource consists of three videos that cover this topic area. The first video demonstrates how to calculate E(X) and E(aX +b) from a probability distribution for a discrete random variable. The second video demonstrates how to calculate the variance and the third video shows how these rules work. 5.04a Brilliant This resource covers some abstract and real world examples deriving the properties of expectation. The examples reveal worked solutions when buttons are clicked. There are some higher level concepts covered here. The resource is free but a login may be required. 5.04a INNotNovak This is a short video demonstrating how to calculate the mean and variance of a linear combination of two normal random variables. 5.04a Penn State This resource includes introductory notes and examples in context. 5.04a and 5.04b Mrs O’Gram’s Maths This video covers the concepts of multiples of Normal Random Variables with a full explanation and a worked example. 5.04b
462187-section-5.04-linear-combinations-of-random-variables-delivery-guide.docx