Its really quite simple. If a drive is not looking, they will not see you no matter where you are. If by chance you actually see a car approaching from behind, and driving erratically because the are not looking, dodging them becomes a best guess, irrespective of you position on the road. IF they are approaching from the front or sides you dodge the best you can. Saying that they have a better chance of seeing you when they are not looking is hoping against hope.
In scenarios other than looking at a smart phone and Facebook, other analyses may be more appropriate.