| 1 | A | B | C | D | E | F |
| --- | --- | --- | --- | --- | --- | --- |
| 2 | performance of imputation for experiments a and b |  |  |  |  |  |
| 3 | experiment, and length of gap in years | number of postal codes erased and imputed | percentage of postal codes erased and imputed | rule a applied | rule b applied | perfect matches |
| 4 |  | number | percent |  |  |  |
| 5 | experiment a |  |  |  |  |  |
| 6 | 1 | 1,572,760 | 90.6 | 91.6 | 8.4 | 77.0 |
| 7 | 2 | 151,305 | 8.7 | 91.5 | 8.5 | 72.1 |
| 8 | 3 | 10,815 | 0.6 | 75.9 | 24.1 | 56.5 |
| 9 | 4 | 720 | 0.0 | 76.7 | 23.3 | 51.7 |
| 10 | 5 | 20 | 0.0 | 60.0 | 40.0 | 35.0 |
| 11 | total - experiment a | 1,735,620 | 100.0 | 91.5 | 8.5 | 76.4 |
| 12 | experiment b |  |  |  |  |  |
| 13 | 1 | 2,830,755 | 81.6 | 91.4 | 8.6 | 76.8 |
| 14 | 2 | 547,870 | 15.8 | 91.4 | 8.6 | 72.0 |
| 15 | 3 | 78,510 | 2.3 | 76.1 | 23.9 | 56.8 |
| 16 | 4 | 10,050 | 0.3 | 76.2 | 23.8 | 53.5 |
| 17 | 5 | 1,090 | 0.0 | 58.2 | 41.8 | 38.0 |
| 18 | 6 | 115 | 0.0 | 59.6 | 40.3 | 29.8 |
| 19 | 7 | 15 | 0.0 | 64.3 | 35.7 | 35.7 |
| 20 | total - experiment b | 3,468,405 | 100.0 | 91.0 | 9.0 | 75.5 |

Question: how many total gaps were created in experiment a?
Answer: 1735620

Question: how many total gaps were created in experiment b?
Answer: 3468405

Question: what is the overall percentage of perfectly matched postal codes?
Answer: 76.4

Question: which gap years had a higher percentage of perfectly matched postal codes? one or two years gap or five or more years gap?
Answer: 1, 2