This chart shows the distribution of odd and even numbers over a series of draws to spot number biases. Players may use these to balance their number selections to have a better chance of matching draw results
Odd/Even Number
The chart below visually represents the distribution of odd and even numbers over a selected range of draws. Each bar corresponds to a specific draw, and it is divided into two segments: the lower segment represents the count of odd numbers drawn, while the upper segment shows the count of even numbers. This makes it easy to compare the proportion of odd and even numbers within each draw, as well as observe any trends or imbalances over time. The total height of each bar indicates the total number of numbers drawn per draw.
Odd/Even Number Summary
This summary categorizes each draw by how many odd and even numbers it contains, making it easy to identify the most common distribution patterns across all draws in the selected period. To complement this data, a donut pie chart visually represents these groupings, with each slice corresponding to a specific odd-even combination. The size of each slice reflects its relative frequency, offering a quick overview of how often each odd-even balance occurs.
| Odd : Even | Draw Count | |||
|---|---|---|---|---|
| 0 : 7 |
|
1 | 1.35% | |
| 1 : 6 |
|
2 | 2.70% | |
| 2 : 5 |
|
11 | 14.86% | |
| 3 : 4 |
|
23 | 31.08% | |
| 4 : 3 |
|
24 | 32.43% | |
| 5 : 2 |
|
11 | 14.86% | |
| 6 : 1 |
|
2 | 2.70% | |
Format Changes in Australian Powerball
The Australian Powerball lottery has undergone several format changes since its launch in 1996, each significantly impacting how number frequency analysis should be conducted. Below is the timeline of the Australian Powerball format changes:
| Period | Format | Powerball |
|---|---|---|
| 1996-2013 | 5 numbers from a pool of 45 (1-45) | 1 number from the same pool of 45 |
| March 1, 2013 - April 12, 2018 | 6 numbers from a pool of 40 (1-40) | 1 number from a separate pool of 20 (1-20) |
| April 13, 2018 - Present | 7 numbers from a pool of 35 (1-35) | 1 number from a separate pool of 20 (1-20) |
From 1996 to 2013, the game followed a 5/45 format, where players selected five main numbers from 1 to 45 and one Powerball from the same pool. In March 2013, the format changed to 6/40 + Powerball 1–20, meaning players had to choose six main numbers from 1 to 40 and a Powerball from a separate pool of 20. This shift altered the odds and made previous number frequency data less relevant. Then, in April 2018, the format changed again to its current form: 7/35 + Powerball 1–20. This increased the difficulty of winning the jackpot but introduced more prize divisions and larger potential jackpots.
How Australian Powerball Format Changes Affect Your Number Strategy.
These format changes have a direct impact on statistical analysis. Mixing frequency data across different formats is not advisable because each version of the game has a different number pool and probability structure.
For example, a number that appeared frequently in the 5/45 format may have done so due to higher individual draw probability, but that same frequency can be misleading in the 6/40 or 7/35 formats. Furthermore, changes to the Powerball pool—from 1–45 to 1–20—also significantly affect how often specific Powerball numbers appear.
Therefore, for meaningful analysis, it’s essential to treat each format as its own distinct dataset. Analyzing trends or frequencies should be restricted to results from within the same format period, especially if the goal is to inform number selection in the current game structure.