- #1

- 207

- 0

Is this true?

In all cases?

In all cases?

You are using an out of date browser. It may not display this or other websites correctly.

You should upgrade or use an alternative browser.

You should upgrade or use an alternative browser.

- Thread starter torquerotates
- Start date

- #1

- 207

- 0

Is this true?

In all cases?

In all cases?

- #2

- 27

- 0

Let X = {-1, 0, 1}

E(X) = (-1+0+1)/3 = 0

E|X| = ( |-1|+|0|+|1| )/3 = (1+0+1)/3 = 2/3

So, I think no, it's not true that E|X| = E(X) if I understand the question correctly.

Share: