This highest income category represents about 13% of all likely voters in my sample and is key to any Romney victory.

FORBES: ZOGBY: Demographics and 2012: Income, Education, Class

From the people who join the page I'll be selecting a 'stratified sample' (that's my statistics GCSE maths coming in there) to analyse for my experiment.

BBC: Facebook profile photo experiment goes live

What you see in this sample is that minimum: to do less than this, would be, in my judgment, to expose you too greatly.

NEWYORKER: Letters to an Editor

With such a small sample those falls could seriously distort the average spending per beneficiary enough to rank my little hospital in a lower tier.

FORBES: Medicare's New Plan To Punish Hospitals For Treating Expensive Patients Will Backfire