Loto last-digit statistics: how are the final digits distributed?
Last digit = the final digit of a number (7, 17, 27 … have the last digit 7). A popular strategy says the winning numbers should have as many different last digits as possible. Here are the figures.
Frequency of each last digit
| Last digit | Observed | Expected | |
|---|---|---|---|
| 0 | 442 | 443.7 | |
| 1 | 546 | 554.6 | |
| 2 | 563 | 554.6 | |
| 3 | 523 | 554.6 | |
| 4 | 550 | 554.6 | |
| 5 | 581 | 554.6 | |
| 6 | 574 | 554.6 | |
| 7 | 549 | 554.6 | |
| 8 | 561 | 554.6 | |
| 9 | 546 | 554.6 |
How many different last digits does a draw have?
| Observed | Share | Expected | |
|---|---|---|---|
| 5 different | 381 | 35.1 % | 37.1 % |
| 4 different | 540 | 49.7 % | 49.6 % |
| 3 different | 158 | 14.5 % | 12.7 % |
| 2 different | 8 | 0.7 % | 0.6 % |
| 1 different | 0 | 0.0 % | 0.0 % |
Line with different last digits
Expected values are exact or simulated, assuming purely random draws. The draws follow chance exactly, and a last-digit rule does not change your chance of winning.