A kind of a decision tree

A decision tree has else two names.
It is not used for a recurrence tree classification, and it is used a real number value for an approximation of a function to take.
An example: An estimate of a price of a house. An estimate of hospitalization of a patient.

Classification tree y in the case of categorical variable.
For example, as a result of sex, man or woman, match, I win and lose.