How do you find mean and variance of a random variable distribution function, F(z) and can someone give an example of this? Thanks.
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Originally Posted by noles2188 How do you find mean and variance of a random variable distribution function, F(z) and can someone give an example of this? Thanks. The pdf is f(z) = dF/dz and from the pdf you get the mean and variance in the usal way.
I found the mean. How can I find the variance with this number?
Originally Posted by noles2188 I found the mean. How can I find the variance with this number? You should know: 1. $\displaystyle Var(X) = E(X^2) - [E(X)]^2$ 2. How to calculate each of the above terms using a pdf.
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