[R] betareg

[Han-Lin Lai]

Hi,
I try beta regression model using "betareg".  I have two questions:

(i)  The example data pratergrouped is not exist.
> pratergrouped
 [1] V11 V1  V2  V3  V4  V5  V6  V7  V8  V9  V10
<0 rows> (or 0-length row.names)

(ii) In the description of betareg, it said variable, say y, is 
restricted in (0,1).  Does this retriction be [0,1] (Kieschnick and 
McCullough,  Statistical modeling 2003, 193-213)?

Thanks for helps in advance.

Cheers!
Han