In decision trees, probabilities are listed on probability branches. These probabilities are___ events that have already been observed. marginal due to conditional on averaged with increased by

1. In decision trees, when evaluating the outcome at a branch, we use the data observed so far to estimate the probabilities. 2. These probabilities represent the likelihood of each class or outcome, given the specific conditions or attributes that have been observed. 3. Mathematically, these are expressed as conditional probabilities, for example: \[ P(\text{Class} \mid \text{Attribute}) = \frac{\text{Number of occurrences of the class with the given attribute}}{\text{Total occurrences of the given attribute}} \] 4. Therefore, the probabilities on the branches of a decision tree are computed based on events that have already been observed and are \(\textbf{conditional on}\) those events. The correct answer is: conditional on