So the more degrees of freedom you have the further this lump starts to move to the right. and to some degree the more symmetric it gets and whats interesting about this i guess its almost different than any other distribution, we have looked at, although we have looked at others that have this property as well, is that you cant have a value below 0 because we are always squaring these values each these guys can have values below zero, they are normally distributed, they can have negative values but since we are squaring and taking the sum of squares this is always going to be positive. 