Methodology · Powerball Australia

What the results show

Over the last 200 draws (since Dec 15, 2022), when the numbers drawn were among those Wisenum rates as the most played, there were on average 5% more winners for the same number of players than when they were among the least played.

95% bootstrap interval: 4% to 5%, comparing the 50 draws rated most played with the 50 rated least played. It describes past draws, not a forecast.

The estimate is updated every quarter with the new official results: it currently covers draws up to Oct 8, 2026.

Before a model is used, it is checked against official results it was not built from. Readings from a model that has not passed are never presented as validated.

How the Powerball Australia estimate was checked

Every figure below comes from the model files Wisenum serves for Powerball Australia. Another game’s test is never shown here.

Fitted on: 443 official Powerball Australia draws, Apr 19, 2018 to Oct 8, 2026
What was measured: Official winner counts in lower prize tiers, against what chance and the number of tickets predict
How it was tested: 4 chronological tests, 240 draws in all: each draw’s winner counts estimated by a model fitted only on earlier draws
Result on draws not used for fitting: Prediction error 57% lower than a model that ignores number patterns
Popularity calibration: Exponent 4.341 (95 % range 3.24–5.44), improved the fit in 4 of 5 chronological tests
Tickets-in-play forecast: Typical error 10%; 8 in 10 draws within -10% to +21% of the published figures It has not met its own accuracy goal yet, so sharing estimates for this game carry that extra uncertainty.

The history replay of a line covers every draw under the current rules; that count can differ from the draws used to fit the model.

Equal odds

Powerball Australia has 134,490,400 possible lines. Every one of them has exactly the same chance of being drawn.

What Wisenum measures

Many players pick their numbers the same way: birthdays, sequences, patterns on the play slip. When those numbers come up, the jackpot and prizes are shared between more winners. Wisenum estimates how closely a line resembles these common choices — its “popularity” — from the official results published after every draw, and suggests lines that resemble them less.

Wisenum also takes the popularity of the Powerball into account when you let it choose them.

What it cannot measure

Official results do not say how many people played exactly your line. Popularity is an estimate of general tendencies, not a promise of a prize or of being a sole winner.

Sources: Official results · thelott.com ↗