| Basis of comparison |
Self-selected teams |
Random teams |
Expected value (The expected value is the likelihood of obtaining a match from two consecutive random draws from the set of participants without replacement, except for age indicator, where the calculation differs due to the larger number of possibilities. ) |
t-value (t-test for the difference between the sample means / proportions of the self-selected versus random teams. (***) statistically significant at the 1% level.) |
| mean of familiarity value |
1.83 |
0.5 |
n/a |
5.73*** |
| proportion of same-sex teams |
66.5% |
63.6% |
55.8% |
0.2 |
| mean number of age categories between team members |
0.81 |
0.91 |
0.97 |
0.44 |
| proportion of teams with equal training status |
39.3% |
45.9% |
55.6% |
0.7 |
| proportion of teams with equal German-only migratory background status |
72.4% |
58.3% |
50.4% |
1.08 |
| proportion of teams with equal German-only native language status |
79.3% |
36.4% |
50.2% |
3.31*** |
