A good term describing the dichotomy between stochastic and deterministic?

Solution 1:

If you are talking about the process :

The generation of the model outputs can be deterministic or stochastic.

You could be referring to what is generated such as:

The values of the model outputs can be deterministic or stochastic.

Similarly if you really want to focus in on outputs as a whole:

The distribution of the model outputs can be deterministic or stochastic.

Keep in mind this is about what you want to communicate. So it's all about what this sentence is trying to support.

Solution 2:

How about domain ? I suppose this word is often used in mathematical parlance when suggesting a range of values.

The domain of model outputs can be deterministic or stochastic.