# Expected value of absolute value

absolute value

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#### Dragan

##### Super Moderator
For part one, What do you think the absolute value of zero is?

For part two, Use the half-normal distribution pdf i.e. E[Y_2] = Sqrt[2/Pi].

#### Dason

For part one, What do you think the absolute value of zero is?
If you're implying the answer is 0 I don't think that's quite right. Unless I'm missing what you're hinting at. I think your second hint applies to the part one as well though - or it can at least be used for part one.

#### Dragan

##### Super Moderator
If you're implying the answer is 0 I don't think that's quite right. Unless I'm missing what you're hinting at. I think your second hint applies to the part one as well though - or it can at least be used for part one.
Oh I know what the answer is: i want others to learn.