MaxHR, or maximum heart rate achieved, is a numerical feature that represents the highest heart rate reached during coronary angiography. To determine the relationships between MaxHR and the presence of heart disease, we need to analyze the typical MaxHR values for each target class ('yes' and 'no').

Based on prior knowledge, the maximum heart rate achieved during coronary angiography can vary depending on factors such as age, sex, and physical fitness level. In general, higher heart rates may indicate increased stress on the heart, which could be associated with heart disease. However, individual variations and other factors need to be considered as well.

To create the dictionary, let's consider typical MaxHR values for each target class ('no' and 'yes'):

```json
{
	"no": [150.0, 155.0, 160.0, 165.0, 170.0],
	"yes": [130.0, 135.0, 140.0, 145.0, 150.0]
}
```

Please note that these specific values are just examples and may not necessarily reflect the actual relationship between MaxHR and the presence of heart disease. To provide more accurate analysis, a comprehensive study of a larger dataset and statistical analysis would be required.