This chart shows the Number Sum and Root Sum. The Number Sum is the sum of calculating the numbers in a combination of a draw result and reduce it to a single digit called "root sum". E.g., a combination of numbers 7, 8, 5, 3, 2, and 1 has a sum of 26. The root sum is 2+6 = 8. If the root sum is more than 1 digit, the root sum is computed again. Analyzing these values over time can sometimes reveal trends in sum totals that appear more frequently.

Last 75 draws
From Jul. 6, 2025 To Sep. 18, 2025

Number Sum Frequency

The graph below illustrates the trends of both the number sum and the root sum over 75 draws, from Jul. 6, 2025 to Sep. 18, 2025 . The Number Sum is the sum of the number combination, obtained by adding together all the numbers selected in a draw, while the Root Sum is derived by reducing the number sum to a single-digit value. Each point on the chart represents the respective values for a single draw, allowing for a clear visual comparison of how these two metrics fluctuate over time. Together, these lines help highlight any emerging patterns, anomalies, or correlations between the overall sum of numbers and their root values throughout the analyzed period.

Number Sum
Root Sum

Number Sum Histogram

The histogram of sums below is a statistical representation that illustrates how often different total values of lotto number combinations occur across 75 draws, from Jul. 6, 2025 to Sep. 18, 2025 . In lotto analysis, studying the distribution of sums helps identify whether draws tend to favor lower totals, higher totals, or mid-range totals, providing a clearer view of number spread patterns.

The possible range of sums is divided into bins or categories. In this case, the bins are defined as intervals such as 28-60 up to 259-287, each representing a continuous span of total values.

This division is important because lotto sums can vary widely, and grouping them into bins makes it easier to detect trends. For example, a cluster of sums in the middle intervals may suggest that draws are balanced between small and large numbers, while dominance in extreme bins could indicate a bias toward unusually low or high totals.

The histogram of sums provides useful insights into the overall totals of lotto draws. The most common sum range is 127-159 with 31 occurrences, indicating that many draws fall within this total range. Conversely, the least common sum range is 259-287 with 0 occurrences, showing that relatively few draws produce totals in this span. This suggests a noticeable concentration of draws within certain total ranges.

In summary, the distribution of sums shows clustering around specific total ranges, suggesting that draws tend to gravitate toward these totals.

Root Sum Histogram

The histogram of root sums above below provides a way to visualize how lotto combinations across 75 draws, from Jul. 6, 2025 to Sep. 18, 2025 , behave when their sums are repeatedly reduced to a single-digit value (from 1 to 9), also called the digital root. This is often used to uncover hidden numerical patterns and balance among draws, since different number combinations can collapse into the same single-digit outcome.

The histogram divides the results into categories from 1 through 9, naturally, with each bin representing one root sum. By observing which categories are more or less frequent, analysts can quickly identify whether certain root sums dominate the outcomes or whether the distribution is fairly even.

The histogram of root sums, where digits of totals are repeatedly reduced to a single digit reveals that the most frequent root sum category is 2 with 12 occurrences, suggesting a strong clustering in this interval. In contrast, the least frequent root sum category is 7, 9 with only 5 occurrences, showing it is rarely observed. The frequencies are relatively balanced across the root sum categorys. Overall, the distribution shows clustering around specific root sum categorys, indicating that draws tend to gravitate toward these values.

Number Sum and Root Sum Statistical Analysis

The lottery number sum distribution reveals a total of 75 draws, from Jul. 6, 2025 to Sep. 18, 2025 , spanning 58 unique sum values. The weighted average sum is approximately 150.73, with a standard deviation of about 35.34.

The frequency of occurrences ranges from 1 to 3 draws for individual sums. For the root sum distribution, there are 75 unique root values with a total of 343 occurrences. The weighted average root sum is 36.34, with a standard deviation of 21.24. Frequencies range from 1 to 9 draws per root value.

The number sum distribution is uneven, with some values appearing significantly more often than others. The root sum distribution is uneven, with some values appearing significantly more often than others.

Format Changes in Australia's Set For Life Lottery

Since its inception in August 2015, Australia's Set for Life lottery has undergone significant changes to enhance gameplay and increase winning opportunities.

Period Format Supplementary Nos.
August 2015 - March 22, 2020 8 numbers from a pool of 37 (8/37) 2 numbers from the same pool.
March 23, 2020 - Present 7 numbers from a pool of 44 (7/44) 2 number from the same pool

Since its launch in August 2015, the Australian Set for Life lottery has undergone notable changes aimed at improving gameplay and enhancing player experience. Initially, players were required to select 8 numbers from a pool of 1 to 37. Each draw produced 8 winning numbers and 2 supplementary numbers.

On March 23, 2020, significant revisions were introduced. The format changed to selecting 7 numbers from a larger pool of 1 to 44, and each draw now produces 7 winning numbers and 2 supplementary numbers. The number of prize divisions expanded to eight, with players now able to win a prize by matching as few as 3 main numbers and 1 supplementary number. These changes also improved the overall odds of winning a prize, shifting from 1 in 59 to 1 in 50. Overall, the modifications were designed to create more frequent and appealing prize opportunities for participants.

How Australia's Set for Life 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 less frequently in the 8/37 format may have done so due to lower individual draw probability, but that same frequency can be misleading in the 7/44 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.