Based on prior knowledge, the relationship between ROE and chronic heart failure can be analyzed. Below is the dictionary with the possible values of ROE for each target class:

```json
{
	"no": [0.1, 0.2, 0.15, 0.3, 0.18],
	"yes": [0.5, 0.6, 0.65, 0.55, 0.7]
}
```

In this analysis, I assumed that lower values of ROE indicate a lower likelihood of chronic heart failure (target class "no"), while higher values suggest a higher likelihood (target class "yes"). The provided values in the dictionary represent typical ROE levels for each target class.