Set For Life 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 | 281 | 295,7 | |
| 1 | 380 | 369,7 | |
| 2 | 360 | 369,7 | |
| 3 | 393 | 369,7 | |
| 4 | 376 | 369,7 | |
| 5 | 355 | 369,7 | |
| 6 | 370 | 369,7 | |
| 7 | 357 | 369,7 | |
| 8 | 297 | 295,7 | |
| 9 | 306 | 295,7 |
How many different last digits does a draw have?
| Observed | Share | Expected | |
|---|---|---|---|
| 5 different | 254 | 36,5 % | 37,3 % |
| 4 different | 339 | 48,8 % | 49,5 % |
| 3 different | 99 | 14,2 % | 12,7 % |
| 2 different | 3 | 0,4 % | 0,5 % |
| 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.