user3624322 - 7 months ago 53

R Question

I am sampling from a Pareto distribution using rpareto from package actuar.

What I find strange is that I keep getting values below the defined scale parameter. I was under the impression they should all be above it.

`tail <- rpareto(2,scale=y_0,shape=a_hat)`

and I get in my vector values below y_0. Does anyone have an explanation?

Thanks!

Answer

Check the formulation used by the function in the `?rpareto`

help page. Perhaps they parameterized the distribution differently than you do. From the help page:

So they say that the returned values with be `>0`

. The support does not depend on the parameters.

If you are comparing this to the version on wikipedia they are basically doing a translation of

```
y = x - scale
```