Based on prior knowledge, age can be a significant factor in chronic heart failure. The relationship between age and the occurrence of chronic heart failure is usually positive, meaning as age increases, the likelihood of developing chronic heart failure also increases.

Here is the analysis and dictionary:

```json
{
	"no": [30.0, 45.0, 55.0, 61.0, 70.0],
	"yes": [60.0, 67.0, 72.0, 80.0, 85.0]
}
```

For the target class "no" (indicating no chronic heart failure), some possible age values are: 30.0, 45.0, 55.0, 61.0, and 70.0.

For the target class "yes" (indicating presence of chronic heart failure), some possible age values are: 60.0, 67.0, 72.0, 80.0, and 85.0.

Please note that these values are just examples and may vary depending on the specific dataset and its distribution.