Based on prior knowledge, we can hypothesize that the feature "Recency" is likely to have a negative relationship with the target variable "Did the person donate blood?". In other words, as the number of months since the last donation increases, the likelihood of the person donating blood again decreases.

To analyze the relationship between the feature "Recency" and the target variable, we would typically examine the distribution of the feature values for each target class, calculate summary statistics, and look for any patterns or trends.

Based on this analysis, we can create the following dictionary:

```json
{
	"yes": [0.5, 1.3, 2.7, 3.1, 4.9],
	"no": [14.2, 16.5, 18.9, 21.8, 23.4]
}
```

These are just example values and ranges, and the exact values would depend on the specific dataset and analysis. The values presented here are meant to demonstrate the format and structure of the dictionary.