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 : 5 |
|
2 | 2.67% | |
| 1 : 4 |
|
10 | 13.33% | |
| 2 : 3 |
|
28 | 37.33% | |
| 3 : 2 |
|
18 | 24.00% | |
| 4 : 1 |
|
13 | 17.33% | |
| 5 : 0 |
|
4 | 5.33% | |
Format Changes in US Powerball Lottery
Since its inception on April 22, 1992, the U.S. Powerball has undergone several significant changes in format and structure. At launch, Powerball became the first lottery game to use a dual-drum format—drawing five white balls from one set and one red Powerball from another—designed to create more prize tiers. Initially, players selected 5 numbers from 45 white balls and 1 from 45 Powerballs.
In November 1997, the format changed to 5/49 + 1/42. This was followed by another change in October 2002, expanding the white ball pool to 53 while keeping the Powerball at 42. By August 2005, the white balls increased again to 55. A major change occurred in January 2009, with the matrix becoming 5/59 + 1/39. Around this time, Florida joined the game, and the drawings were moved there.
One of the most notable changes came in January 2012 when the Powerball pool was reduced to 35, while the white balls remained at 59. Another significant format change was introduced in October 2015, adjusting the matrix to 5/69 + 1/26. This increased the odds of winning smaller prizes while making the jackpot harder to win, with overall odds shifting to approximately 1 in 292 million.
| Period | Format | Powerball |
|---|---|---|
| April 1992 | 5 of 45 | 1 of 45 |
| November 1997 | 5 of 49 | 1 of 42 |
| October 2002 | 5 of 53 | 1 of 42 |
| August 2005 | 5 of 55 | 1 of 42 |
| January 2009 | 5 of 59 | 1 of 39 |
| January 2012 | 5 of 59 | 1 of 35 |
| October 2015 | 5 of 69 | 1 of 26 |
How US Powerball Lotto 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 5/49 format may have done so due to higher individual draw probability, but that same frequency can be misleading in the 5/69 formats.
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.