Based on prior knowledge, here is the analysis of the relationship between the feature "duration" and the task of determining whether a person receives a credit or not:

- Typically, individuals who receive credit tend to have durations ranging from 6 months to 36 months. Therefore, in the "yes" category, typical duration values could be [6.0, 12.0, 24.0, 30.0, 36.0].
- On the other hand, individuals who do not receive credit may have durations that fall outside this range. In the "no" category, typical duration values could be [1.0, 48.0, 60.0, 72.0, 84.0], where shorter durations below 6 months and longer durations above 36 months are common.

Here is the dictionary with the requested format:

```json
{
    "yes": [6.0, 12.0, 24.0, 30.0, 36.0],
    "no": [1.0, 48.0, 60.0, 72.0, 84.0]
}
```