The parameter of a t distribution, used by Td-class
Objects from the Class
Objects can be created by calls of the form
Usually an object of this class is not needed on its own, it is generated automatically when an object of the class
Td is instantiated.
W=new("TParameter",df=1) df(W) # df of this distribution is 1. df(W)=2 # df of this distribution is now 2.