| Letter | Last Name | Frequency | % Correct |
|---|---|---|---|
| M | Müller | 1:85 | 92%
|
| S | Schmidt | 1:113 | 73%
|
| M | Meyer | 1:248 | 49%
|
| S | Schneider | 1:184 | 41%
|
| B | Bauer | 1:357 | 35%
|
| F | Fischer | 1:215 | 29%
|
| W | Weber | 1:246 | 29%
|
| B | Becker | 1:287 | 25%
|
| W | Wagner | 1:268 | 25%
|
| K | Klein | 1:402 | 18%
|
| S | Schulz | 1:289 | 18%
|
| W | Wolf | 1:412 | 16%
|
| H | Hoffman | 1:292 | 14%
|
| K | Koch | 1:349 | 13%
|
| R | Richter | 1:351 | 13%
|
| S | Schäfer | 1:362 | 5%
|