Number 18

In Oz Lotto under the 7/45 + 2/45 · Jan 2009 – May 2022 rules — 697 draws, 7 from 1–45 (an earlier era).

95times drawn · chance expected 108 −1.40σ

17draws waiting · a wait this long: 7% for any number

7.2average wait between appearances · chance says 6.4

34longest completed wait · 30% chance of one at least that long

18 is drawn as often as chance explains

Drawn 95 times in 697 draws against 108.4 expected, −1.40σ. Each draw is independent: after 17 draws away it is exactly as likely tonight as a number drawn yesterday. It has also come out as the bonus ball 27 times, counted separately.

Number 18, draw by draw

Drawn 95 times in 697 draws · average wait 7.2 draws · longest completed wait 34 · waiting 17 draws now

a completed wait — darker is longer the wait still running — a lower bound, not a finished gap

Where it lands in a sorted draw

Sort a draw and 18 has a favourite seat — chance gives a small number the low positions more often. That is the shape of sorting, not of the machine.

1st smallest6 · chance 4.0
2nd smallest28 · chance 18.5
3rd smallest26 · chance 32.1
4th smallest22 · chance 26.8
5th smallest13 · chance 11.2
6th smallest0 · chance 2.2
7th smallest0 · chance 0.2

Every position’s lane →

The company it keeps

Seen most often with these — chance gives every partner about 13.0 shared draws, and the leaders are simply the ones that came out ahead this time.

21 5 37 20 25 23

It has shared a draw with every one of the other 44 numbers; chance expected about 0.0 still unmet by now. Every pair →

How many people play it

Under the crowd model, 18 is picked about 1.22× as often as an indifferent choice — 15th most popular of 45. That changes nothing about whether it comes up, and everything about how many ways a jackpot on it would be shared.

Numbers 1–31 — the birthday zone ×1.22

The model and its sources → · What people believe about 18 →

Every draw it appeared in

Date	Wait	Position	The draw
2022-01-11	3	3rd	1 3 18 22 32 37 38
2021-12-21	16	3rd	3 14 18 26 30 36 43
2021-08-31	2	4th	8 14 17 18 34 36

What this cannot tell you

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: 18 is drawn with probability 7/45 tonight whatever it did last week.

2018-11-27	21	4th	4 7 13 18 25 30 38
2018-07-03	2	5th	4 9 10 16 18 23 27
2018-06-19	2	3rd	10 16 18 20 22 26 35
2018-06-05	12	2nd	11 18 23 30 33 37 45
2018-03-13	1	2nd	5 18 23 25 29 35 39
2018-03-06	11	2nd	5 18 30 34 37 38 41
2017-12-19	24	2nd	5 18 26 34 35 37 44
2017-07-04	17	2nd	7 18 28 33 35 37 43
2017-03-07	5	4th	4 6 17 18 21 33 37
2017-01-31	3	3rd	3 8 18 20 24 30 38
2017-01-10	8	4th	2 12 17 18 34 41 43
2016-11-15	5	5th	7 11 15 16 18 26 27
2016-10-11	9	3rd	3 8 18 21 25 27 38
2016-08-09	8	4th	2 11 13 18 26 33 41
2016-06-14	4	1st	18 20 22 25 29 44 45
2016-05-17	2	3rd	5 10 18 21 24 42 44
2016-05-03	3	3rd	9 11 18 20 30 33 42
2016-04-12	7	1st	18 23 31 35 39 42 43
2016-02-23	7	3rd	1 5 18 21 22 36 39
2016-01-05	10	1st	18 19 25 31 33 37 43
2015-10-27	8	5th	3 5 10 11 18 30 44
2015-09-01	1	2nd	13 18 22 24 25 43 45
2015-08-25	4	2nd	15 18 19 21 25 34 45
2015-07-28	8	2nd	14 18 20 25 33 36 38
2015-06-02	4	3rd	2 17 18 21 30 33 37
2015-05-05	10	3rd	2 17 18 21 29 37 45
2015-02-24	16	4th	3 4 6 18 21 23 31
2014-11-04	30	3rd	13 14 18 21 23 25 31
2014-04-08	22	3rd	6 12 18 19 24 25 35
2013-11-05	3	5th	3 6 10 17 18 37 45
2013-10-15	5	4th	2 5 10 18 22 36 39
2013-09-10	1	2nd	12 18 20 21 29 37 40
2013-09-03	1	2nd	8 18 22 23 26 28 31
2013-08-27	12	2nd	7 18 19 28 31 33 37
2013-06-04	4	4th	2 5 17 18 22 26 41
2013-05-07	6	2nd	16 18 24 28 31 35 44
2013-03-26	4	2nd	14 18 19 21 25 43 44
2013-02-26	1	5th	7 8 10 12 18 23 34
2013-02-19	24	3rd	1 2 18 20 27 35 41
2012-09-04	2	2nd	6 18 20 32 33 34 44
2012-08-21	1	2nd	5 18 32 33 35 36 44
2012-08-14	20	4th	4 7 14 18 19 28 42
2012-03-27	8	5th	3 11 15 17 18 24 39
2012-01-31	5	5th	1 9 12 14 18 32 39
2011-12-27	2	4th	6 9 12 18 20 35 38
2011-12-13	5	2nd	11 18 21 25 29 42 45
2011-11-08	8	5th	1 3 6 15 18 21 34
2011-09-13	3	2nd	6 18 20 24 31 37 38
2011-08-23	1	4th	7 9 12 18 26 27 39
2011-08-16	18	2nd	5 18 22 24 25 39 41
2011-04-12	1	4th	5 9 13 18 29 40 41
2011-04-05	6	1st	18 21 24 40 42 43 45
2011-02-22	2	4th	2 5 16 18 26 28 39
2011-02-08	21	3rd	14 15 18 23 26 30 41
2010-09-14	13	1st	18 23 24 25 29 34 41
2010-06-15	2	4th	8 10 15 18 29 32 38
2010-06-01	2	5th	6 14 15 16 18 30 40
2010-05-18	1	2nd	13 18 22 27 33 38 42
2010-05-11	1	5th	7 10 13 15 18 27 45
2010-05-04	1	4th	5 14 16 18 19 20 28
2010-04-27	11	5th	3 4 6 12 18 22 42
2010-02-09	3	2nd	5 18 23 24 28 42 44
2010-01-19	1	2nd	7 18 20 33 37 38 40
2010-01-12	6	2nd	14 18 23 31 33 37 40
2009-12-01	10	4th	2 8 10 18 24 27 28
2009-09-22	13	2nd	7 18 19 20 21 24 26
2009-06-23	4	3rd	9 15 18 21 23 31 40
2009-05-26	1	2nd	5 18 19 20 41 43 44
2009-05-19	4	4th	11 12 17 18 21 22 25
2009-04-21	10	2nd	16 18 20 21 22 32 43
2009-02-10	—	4th	1 5 16 18 23 29 44