I have got a question regarding the GDP. Is there a general result of how the variance and the expected value of a GDP distributed random variable x with expected value E(x) change if one would change the scale parameter and/or the shape parameter by constant

**a**and/or

**b**?

For example by result i mean something like: Assume we would multiply the scaleparameter by

**a**(scale*

**a**) then it follows that

**a***E(x).

Thanks a lot for your help in advance.