Final answer:
The statement is false; classification decisions in a CART can be made throughout the decision tree, not just at the end.
Step-by-step explanation:
The statement that classification decisions in a Classification and Regression Tree (CART) are only made at the end of the tree is False. In CART methodology, decisions can be made at various points throughout the tree, not solely at the end.
Decision tree-based classifiers like CART can suffer from local extremums early in the decision process, which might introduce biases, especially with smaller datasets and more complex subcategories. The robustness of analyses performed by CART may be surpassed by using ensemble classifiers, such as Random Forests, that utilize a more exhaustive search strategy to account for rarer variants unlike the somewhat 'greedy' approach of CART.