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What is a tree diagram in probability?
AA table of joint totals arranged by two variables
BA circle chart whose slices are the outcome shares
CA graph of branches labelled with the possible results
DA list of every outcome ordered from small to large
Answer & Solution
Correct answer: C. A graph of branches labelled with the possible results
1. A tree diagram is a graph built from branches.
2. Each branch carries either a frequency or a probability for one stage of the experiment.
3. Following a path from root to tip gives one complete outcome, which makes complex conditional problems easier to see.
4. A table of joint totals describes a contingency table, which is a different tool.
_Source: OpenStax Introductory Business Statistics (CC BY 4.0), Ch 3 "Probability Topics", section 3.4 Contingency Tables and Probability Trees_
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