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Reading the draws and working out what chance predicts.
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Reading the draws and working out what chance predicts.
In New York Lotto under the 6/59 + 1/55 · Jan 2010 – Oct 2010 rules — 83 draws, 6 from 1–59 (an earlier era).
Drawn 8 times in 83 draws against 8.4 expected, −0.16σ. Each draw is independent: after 7 draws away it is exactly as likely tonight as a number drawn yesterday.
Drawn 8 times in 83 draws · average wait 10.4 draws · longest completed wait 32 · waiting 7 draws now
a completed wait — darker is longer the wait still running — a lower bound, not a finished gap
Sort a draw and 21 has a favourite seat — chance gives a small number the low positions more often. That is the shape of sorting, not of the machine.
Seen most often with these — chance gives every partner about 0.7 shared draws, and the leaders are simply the ones that came out ahead this time.
Never drawn alongside 27 of the other 58 numbers; chance expects about 29 such strangers by now. Every pair →
Under the crowd model, 21 is picked about 1.22× as often as an indifferent choice — 15th most popular of 59. That changes nothing about whether it comes up, and everything about how many ways a jackpot on it would be shared.
The model and its sources → · What people believe about 21 →
Nothing here predicts the next draw. A number’s history is a record of a fair machine’s past, and the machine keeps none of it: 21 is drawn with probability 6/59 tonight whatever it did last week.
| 2010-08-21 | 3 | 4th | 1920212752 |
| 2010-08-11 | 32 | 2nd | 92128303551 |
| 2010-04-21 | 27 | 2nd | 152132335152 |
| 2010-01-16 | 2 | 2nd | 192127394849 |
| 2010-01-09 | — | 3rd | 91521233146 |