★ Must-know
A decision tree starts with one decision node, branches into possible outcomes, and continues through further nodes representing additional possibilities.
In a decision tree, the square marks the point where a decision is made and the circles mark the points where outcomes are realised.
Further detail
1. What does a decision tree primarily represent?
2. How does a decision tree develop from its starting point?
3. Which combination best describes important strengths of decision trees?
What does a decision tree map?
The possible outcomes of a series of related choices.
What shape marks a decision point in a decision tree?
A square marks the decision point.
What is one advantage of decision trees regarding data preparation?
They require minimal data preparation.
What is a limitation of decision trees related to complexity?
They may become too complex.
Decision tree: Purpose
Map outcomes of choices, compare costs, benefits.
Decision tree symbols
Squares = decisions, Circles = outcomes.
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