Based on prior knowledge, we can assume that the recency of blood donation may be an important feature in determining whether a person will donate blood again. The longer it has been since their last donation, the less likely they may be to donate again.

Here is the analysis and the dictionary with recency values for each target class:

Analysis:
- Target: Did the person donate blood? Yes or no?
- Feature: Recency, months since last donation (numeric variable)
- Based on prior knowledge, we can assume that the recency of blood donation may be an important factor in determining whether a person will donate blood again.
- Typically, individuals who recently donated blood ('yes' class) are more likely to donate again, while those who donated longer ago ('no' class) are less likely to donate again.

Dictionary:

```json
{
  "yes": [0.0, 1.0, 2.0, 3.0, 4.0],
  "no": [9.0, 10.0, 11.0, 12.0, 13.0]
}
```

In this dictionary, 'yes' represents the possible values of the recency feature for individuals who donated blood again, while 'no' represents the possible values for individuals who did not donate blood again.