In this chart, numbers are divided into two sections: low numbers and high numbers. Low numbers are typically from the lower half of the range of numbers while the high numbers are from the upper half of the range of numbers. Players may use these to balance their number selections to have a better chance of matching draw results.
High/Low Number
The graph below illustrates the distribution of high and low numbers over a selected period of draws. Each bar represents a single draw, with the lower portion of the bar indicating the count of low numbers (typically defined as numbers in the lower half of the number range), and the upper portion representing the count of high numbers (those in the upper half of the range). This visually compare the frequency and balance of high versus low numbers across multiple draws. The chart provides a clear view of both individual and cumulative trends, helping to identify patterns or biases in number distribution over time.
High/Low Number Summary
Below is a summary of the high-low number distribution which groups the draws based on the specific combinations of high and low numbers (e.g., 3 high and 2 low, 4 low and 1 high, etc.). This summary helps to highlight the most common high-low patterns observed over the selected period. This visually represent the distribution offering an at-a-glance view of the proportion of each high-low combination. The chart makes it easy to identify dominant patterns and assess how evenly the high and low numbers are distributed across all draws.
| High/Low | Draw Count | |||
|---|---|---|---|---|
| 6 : 1 |
|
4 | 5.41% | |
| 5 : 2 |
|
11 | 14.86% | |
| 4 : 3 |
|
19 | 25.68% | |
| 3 : 4 |
|
23 | 31.08% | |
| 2 : 5 |
|
15 | 20.27% | |
| 1 : 6 |
|
1 | 1.35% | |
| 0 : 7 |
|
1 | 1.35% | |
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.