Does the draw day change what Powerball produces?
Powerball has been drawn as 5 numbers from 69 plus a Powerball from 26 since October 2015. Everything on this page counts only the 1,418 draws since that change.
A Saturday Powerball draw has averaged 35.26 against 35.41 on Wednesday, a difference of -0.15. Chance predicts 0.00.
The two nights do not cover the same stretch of history: Wednesday has 575 draws going back to 2015-10-07, Saturday has 575 since 2015-10-10. The pool has not changed in that time, so chance predicts no difference between them at all.
What was measured read from the dates
The draw nights are counted from the dates themselves, not assumed. This record holds 3 nights: Wednesday 575, Saturday 575, Monday 268. The two busiest are compared below and the other 268 draws are left out of the comparison.
The schedule is the denominator, and it is uneven. Setting a number's count on one night against half of its appearances would make every number look like a Wednesday number, because that night simply held more draws. Each expectation here is instead summed draw by draw from the pool of the draw it belongs to, over exactly the draws a number was eligible for. A number that only entered the pool later is measured against the nights that ran after it arrived, not against the whole record.
Each night 1,418 draws
| Night | Draws | Since | Average | Chance | SE |
|---|---|---|---|---|---|
| Wednesday | 575 | 2015-10-07 | 35.41 | 35.00 | +1.13 |
| Saturday | 575 | 2015-10-10 | 35.26 | 35.00 | +0.71 |
| Monday | 268 | 2021-08-23 | 35.43 | 35.00 | +0.82 |
Red marks a figure outside the range ordinary variation produces
The Chance column is not the same for every night, and that is the whole point. It is the average of 5/pool arithmetic over the draws that night actually held, so a night whose record reaches further back carries whatever pool sizes were in force then. Comparing the nights against one shared figure would manufacture a difference that is only the calendar.
Numbers that lean one way 69 ranked
| Number | Seen | On Saturday | Share | Chance | SE |
|---|---|---|---|---|---|
| 32 | 118 | 61 | 51.7% | 40.6% | +3.11 |
| 36 | 118 | 56 | 47.5% | 40.6% | +2.31 |
| 03 | 113 | 54 | 47.8% | 40.6% | +1.98 |
| 23 | 119 | 54 | 45.4% | 40.6% | +1.98 |
| 62 | 113 | 54 | 47.8% | 40.6% | +1.98 |
| 49 | 84 | 31 | 36.9% | 40.6% | -1.72 |
| 55 | 95 | 30 | 31.6% | 40.6% | -1.88 |
| 07 | 96 | 29 | 30.2% | 40.6% | -2.04 |
| 29 | 95 | 26 | 27.4% | 40.6% | -2.52 |
| 46 | 83 | 26 | 31.3% | 40.6% | -2.52 |
The five leaning each way, out of 69 numbers read. 5 of the 69 sit outside that range. Reading 69 numbers is how that happens: at two standard errors about one in twenty lands outside by chance alone, so a handful is the price of reading 69, not a property of those numbers.
Recent trend blocks of 20 draws
result for the blockrange ordinary variation allowsoutside that range
Each point is the average number drawn across one block of 20 draws, both nights together. The band is what chance predicts for those draws from their own pools, which is why it is not a flat line: when the pool grows, the predicted average rises with it. That step is the same effect that gives the two nights different predicted averages above.
Applied to this draw draw 1418 · 2026-10-10
Draw 1418 fell on a Saturday and drew 0104193351. Its numbers average 21.60, where chance predicts 35.00 for any draw from 69 numbers. Saturday draws have averaged 35.26 over 575 draws.
Of its 5 numbers, 0 have come up more often on Saturday than chance predicts, and 5 more often on Wednesday: 0104193351. That is a reading of the past, not a property of the numbers.
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