what is the different between deterministic and probability methods?

Answer 1

Add one more leg to complete the stool:

(1) Deterministic methods deal with exactness numbers.

(2) Statistical methods, when the exactness is not available or is too costly to achieve, deal with ranges of numbers.

(3) Probabilistic methods, in turn, wrap statistical methods back to deterministic methods by assigning exactness reliability numbers on the attributes of the ranges of numbers.