Based on my prior knowledge, Oldpeak is a numeric variable measured in depression. In the context of coronary angiography, a higher value of Oldpeak indicates a greater degree of ST depression, which is a common indicator of myocardial ischemia. Therefore, it is likely that higher values of Oldpeak would be associated with a higher likelihood of heart disease.

Here is a dictionary that highlights the relationship between Oldpeak values and the likelihood of heart disease:

```json
{
	"no": [0.5, 0.8, 1.2, 1.5, 1.8],
	"yes": [2.3, 2.8, 3.1, 3.5, 4.0]
}
```

According to the analysis, for the target class "no" (indicating no heart disease), some typical Oldpeak values are 0.5, 0.8, 1.2, 1.5, and 1.8. On the other hand, for the target class "yes" (indicating the presence of heart disease), some typical Oldpeak values are 2.3, 2.8, 3.1, 3.5, and 4.0.