- #1
s3a
- 818
- 8
Homework Statement
Let X be a random variable with the following probability distribution
X 0 1 2 3 4
f(x) 1/16 1/4 3/8 1/4 1/16
If another random variable Y = X^2 + 1 is formed, find the mean E[Y].
2. Relevant equation
E[x] = Σ_x [ x f(x)]
The Attempt at a Solution
I know how to compute the answer, however I do not understand what computing the expected value with X^2 + 1 instead of X as the random variable means.
Could someone please explain that to me?