From the same website:
A complete score is now made up of two parts, A and B.
The first, the A score, or the start value, is an assigned degree of difficulty.
In this instance, both He and Liukin had the same start value, 7.7.
The second part of a score, the B score, is an execution score.
Six judges vote.
The high and the low are tossed per the rules.
That leaves four scores.
Those four are averaged.
That average becomes the B score.
Add the A and B together and you get a complete score.
In this instance, both He and Liukin got 16.725.
Thus: onto tiebreakers.
The first tiebreak is the B score.
Here both got the same B score, 9.025.
The next tiebreak: the judges drop the next highest deduction.
That obviously leaves three judges' scores instead of four -- or to be precise, the marks those three judges gave for deductions.
Here, the average of those three judges' deductions for He: .933.
For Liukin: .966.
Liukin had a greater deduction.
Thus she was second.
Another way of getting to that math: Take the B scores of the three judges from that second tie-break, add them together and divide by three.
The math for He: 9.1, 9.1, 9.0. That equals 27.2. Divide that by three, and that equals 9.066, the sixes stretching out to infinity.
For Liukin: 9.1, 9.0, 9.0. That equals 27.1. Divide that by three and it's 9.0333, the threes going out forever.
Thus she was second.
