[Prophet in the wilderness]

Let's give it a +/- 5 %

So ? if we can add that to Fred's, then, he is doing about 18 % .... would that apply to Mitt and Huck ? why or why not does that not apply to Mitt or Huck ?

[Strategerist]

So ? if we can add that to Fred's, then, he is doing about 18 % .... would that apply to Mitt and Huck ? why or why not does that not apply to Mitt or Huck ?

By definition you don't know how or to who the margin of error applies to. If you want to apply +5 to your favorites and subtract -5 from the ones you don't like, knock yourself out, but it has no basis in anything real.