This chart shows how often each individual lottery number has been drawn over a specific period or across all previous draws. This statistic gives players an insight into which numbers have been drawn more frequently or less frequently.
OZ Lotto Charts
- Latest Draw Result
- Number Frequency
- Overdue Numbers
- Odd/Even Numbers
- High/Low Numbers
- Sum and Root Sum
- Hot and Cold Numbers
- Most Common Pairs
- Most Common Triplets
- Most Common Quadruplets
- Most Common Quintuplets
- Mean, STDEV, & Range Trend
- Mean Distribution
- Range Distribution
- STDDEV Distribution
- IQR Distribution
- Clustering Distribution
Number Frequency
The Number Frequency Statistics table below presents key metrics for analyzing the occurrence patterns of specific numbers. It covers 75 draws, from Dec. 3, 2024 to May. 5, 2026 .
It includes columns for Frequency, Last Draw Interval, and the Last Draw Date, which indicates the number of draws a ball appears, the number of draws since the ball last appeared, and the date the ball last appeared, respectively.
Statistical Analysis
This report analyzes 75 total draws across 47 distinct lottery numbers.
| Most frequent numbers | 17, 39 (appeared 20 times) |
| Least frequent number | 10 (appeared 5 times) |
| Mean frequency | 11.17 |
| Median frequency: | 11.00 |
| Mode(s) of frequency: | 11 |
| Standard deviation: | 2.85 |
| Distribution type: | Moderately Varied Some variation exists between numbers, possibly indicating trends or randomness. |
Number Frequency by Rank
The Summary of Number Frequency by Rank organizes lottery numbers based on how often they have been drawn, grouping them into tiers or ranks according to their frequencies. Numbers with the highest frequencies are placed in the top rank, indicating they have been drawn most often and may be considered "hot" numbers. Subsequent ranks include numbers with gradually lower frequencies, offering a clear comparison of how commonly each number appears.
Percentile Rank shows the relative position of a number’s frequency compared to all others. It answers the question “What percentage of numbers were drawn less frequently than this one?”. Using the percentile rank you can compare easily by normalizing frequencies on a 0–100 scale, visualizes hot/cold numbers: You can chart numbers into low, mid, and high percentiles.
This ranking system helps highlight patterns in number occurrences, making it easier to identify which numbers are most frequent, moderately drawn, or rarely drawn. It provides a useful overview for players looking to base their number selections on historical draw performance.
Format Changes in Australia's Oz Lotto
Oz Lotto, Australia’s first national lottery, has undergone several format changes since its launch in 1994. Below is the timeline of the Australia's Oz lotto format changes:
| Period | Format | Supplementary Nos. |
|---|---|---|
| 1994 - Oct. 11, 2005 | 6 numbers from a pool of 45 (6/45) | 2 numbers from the same pool. |
| Oct. 18, 2005 - May 10, 2022 | 7 numbers from a pool of 45 (7/45) | 2 number from the same pool. |
| May 17, 2022 - Present | 7 numbers from a pool of 47 (7/47) | 3 number from the same pool |
Initially, the game required players to select six numbers from a pool of 45, and two supplementary numbers were drawn to help determine secondary prizes. In October 2005, the format was modified to increase the number of main numbers drawn from six to seven, still from a pool of 45, while retaining two supplementary numbers. This change made the jackpot more difficult to win but allowed for larger prize pools. In May 2022, Oz Lotto underwent another significant update. The number pool was increased from 45 to 47, while the game continued to draw seven main numbers. Additionally, the number of supplementary numbers increased from two to three. Along with this change, the minimum jackpot prize was raised from $2 million to $3 million, and the overall odds of winning any prize improved, creating more opportunities for players to win across additional prize divisions. These changes reflect Oz Lotto's ongoing efforts to remain engaging and competitive within Australia’s lottery landscape.
How Australia's Oz 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 6/45 format may have done so due to higher individual draw probability, but that same frequency can be misleading in the 7/45 or 7/47 formats. Furthermore, changes to the number pool also significantly affect how often a specific supplementary 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.
OZ Lotto Charts
- Latest Draw Result
- Number Frequency
- Overdue Numbers
- Odd/Even Numbers
- High/Low Numbers
- Sum and Root Sum
- Hot and Cold Numbers
- Most Common Pairs
- Most Common Triplets
- Most Common Quadruplets
- Most Common Quintuplets
- Mean, STDEV, & Range Trend
- Mean Distribution
- Range Distribution
- STDDEV Distribution
- IQR Distribution
- Clustering Distribution