An introduction to the expected value and variance of discrete random variables. The formulas are introduced, explained, and an example is worked through.
A brief introduction to the (continuous) uniform distribution. I discuss its pdf, median, mean, and variance. I also work through an example of finding a probability ...
Excel 2010: Mean, Standard Deviation, and Variance of a Discrete Random Variable. See www.mathheals.com for more videos.
From David Hays
random variables and probability distributions problems and solutions pdf, discrete random variables solved examples, random variable example problems with ...
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This video shows you how to construct an excel sheet that will compute the Mean, Variance, and Standard Deviation of a Discrete Random Variable - Probability ...
From Cody Tabbert
Let's prove that Var(X) = E(X^2) - [E(x)]^2 using the properties of E(X), which is a summation! We also review the definition of variance for discrete random ...