Reply #10: The Zogby in Iowa

[Feanorcurufinwe]

was a rolling three day average poll as well. As is the ARG. It smooths out the spike and troughs and makes it easier to see trends. Also, if basically they have the resources to do 200 phone interviews a day, and they are constantly doing interviews, it kinda makes sense to put out the data daily like this. But when they publicize the one day figure, as Zogby did today (sort of), it's important to remember that that is only a third the sample size, so the MOE goes up. I don't know enough about statistics to know if it just triples or something else.