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Decision Tree Analysis

  • 2 subtopics
  • 6 things to know
  • Unit A2 1

What Decision Tree Analysis covers

Decision tree analysis is examined in Unit A2 1, Strategic Decision Making. It covers drawing a decision tree and calculating expected value and the uses and limitations of decision tree analysis.

Where it is assessed

Unit A2 1

Strategic Decision Making, written examination, 30% of A level.

Check the CCEA specification ↗

The 2 subtopics

Each one has its own page.

What you need to know

Answer each one before you reveal it.

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Key term

What do the square and the circle stand for on a decision tree, and what are the first two steps in finding an expected value?

Key term

What comparison do decision trees allow, what do they leave out, and what limits how far they can be trusted?

Key term

Find the net gain on an expected value of 330,000 less a cost of 170,000, and which way do you work at each stage?

Key term

What type of comparison do decision trees enable between strategic options?

Key term

What does a square symbol represent in a decision tree?

Key term

Give examples of qualitative factors that decision trees do not account for.

Take Decision Tree Analysis further

The same content, four other ways.

Commonly confused

Pairs that lose marks when they are blurred together.

  • Expected value vs Net gain

    Expected value: the total of each outcome multiplied by its probability. Net gain: the figure left once the initial investment is subtracted.

Questions from this topic

Each one with the model answer underneath.

  1. 1

    What does a square symbol represent in a decision tree?

    Model answer

    A decision node, which represents a point where a choice must be made between alternative courses of action.

  2. 2

    What does a circle symbol represent in a decision tree?

    Model answer

    A chance node, which represents a point where different outcomes may occur, each with an associated probability.

  3. 3

    What must the probabilities at each chance node sum to?

    Model answer

    1 (or 100%).

  4. 4

    When calculating expected value at a chance node, what must first be identified?

    Model answer

    Each possible outcome and its financial value.

  5. 5

    After identifying outcomes and their values, what is the next step in calculating expected value?

    Model answer

    Multiply each outcome value by its probability.

  6. 6

    What is the final step in calculating expected value at a chance node?

    Model answer

    Sum all the probability-weighted values.

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Decision Tree Analysis revision questions

What does Decision Tree Analysis cover in CCEA A-Level Business?
2 subtopics: drawing a decision tree and calculating expected value and the uses and limitations of decision tree analysis. Each one has its own page with questions and model answers.
How is Decision Tree Analysis organised?
By the CCEA 3210 specification, subtopic by subtopic, so it matches the order you are taught it in.

Every question in Decision Tree Analysis, on a schedule.

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