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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 11 times in 83 draws against 8.4 expected, +0.93σ. Each draw is independent: after 4 draws away it is exactly as likely tonight as a number drawn yesterday.
Drawn 11 times in 83 draws · average wait 7.8 draws · longest completed wait 23 · waiting 4 draws now
a completed wait — darker is longer the wait still running — a lower bound, not a finished gap
Sort a draw and 4 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 0.9 shared draws, and the leaders are simply the ones that came out ahead this time.
Never drawn alongside 21 of the other 58 numbers; chance expects about 22 such strangers by now. Every pair →
Under the crowd model, 4 is picked about 1.34× as often as an indifferent choice — 6th 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.
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: 4 is drawn with probability 6/59 tonight whatever it did last week.
| 2010-06-30 | 9 | 1st | 4627283138 |
| 2010-05-29 | 3 | 1st | 41823293036 |
| 2010-05-19 | 2 | 2nd | 249132645 |
| 2010-05-12 | 3 | 1st | 4910232849 |
| 2010-05-01 | 18 | 1st | 4512234356 |
| 2010-02-27 | 1 | 2nd | 345304043 |
| 2010-02-24 | 15 | 2nd | 3414404254 |
| 2010-01-02 | — | 1st | 42829374356 |