
Calculate expectation of a geometric random variable
Calculate expectation of a geometric random variable Ask Question Asked 11 years, 7 months ago Modified 1 year, 8 months ago
What is the difference between Average and Expected value?
I have been going through the definition of expected value on Wikipedia beneath all that jargon it seems that the expected value of a distribution is the average value of the distribution. Did I …
expectation - Expected Number of coin flips for 2 consecutive …
Jul 9, 2018 · I was working on problems on expectation and found this one as a question from a well-known exam Assume that you are flipping a fair coin, i.e. probability of heads or tails is …
Proof variance of Geometric Distribution - Mathematics Stack …
May 26, 2015 · I'm not familiar with the equation input method, so I handwrite the proof. I'm using the variant of geometric distribution the same as @ndrizza. Therefore E [X]=1/p in this case. …
Expected Value of a Binomial distribution? - Mathematics Stack …
Nov 1, 2012 · The linearity of expectation holds even when the random variables are not independent. Suppose we take a sample of size n n, without replacement, from a box that has …
measure-theoretic definition of expectation - Mathematics Stack …
Feb 23, 2015 · measure-theoretic definition of expectation Ask Question Asked 10 years, 4 months ago Modified 10 years, 4 months ago
The expectation of an expectation - Mathematics Stack Exchange
Oct 21, 2020 · This may seem trivial but just to confirm, as the expected value is a constant, this implies that the expectation of an expectation is just itself. It would be useful to know if this …
What is $E(X^2)$ mean in literal terms? - Mathematics Stack …
Nov 9, 2016 · It is, in this case, the expectation of the square of the count of trials until the success. We can name this the "second raw moment", but what the heck does that mean? …
expectation - What is the expected value of a probability density ...
Jan 25, 2018 · The expected value of a function can be found by integrating the product of the function with the probability density function (PDF). What if I want to find the expected value of …
Proof of $ E(XY) = E(X) E(Y) - Mathematics Stack Exchange
Jan 29, 2019 · When two random variables are statistically independent, the expectation of their product is the product of their expectations. I found this on wikipedia : https://en ...