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Managers, Leadership and Decision Making

Scientific and intuitive decision making, and expected value

  • 6 things to know
  • Papers 1, 2 and 3

Overview

The two approaches to deciding, and calculating expected value and net gain.

What you need to know

Answer each one before you reveal it.

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Numbers

What is a decision tree, and how does intuitive decision making differ from scientific?

Numbers

When is expected value used, and how is it calculated?

Evaluation

How is net gain calculated, and what does it tell a decision maker?

Numbers

What do the square and circular nodes represent in a decision tree, and why is it read backwards?

Numbers

State the formula for calculating expected value.

Numbers

State the formula for calculating net gain in decision tree analysis.

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What is the basis of scientific decision making in business?

    Model answer

    Scientific decision making is based on data and quantitative analysis to reduce subjectivity in business choices.

  2. 2

    How does intuitive decision making differ from scientific decision making in terms of what it relies upon?

    Model answer

    Intuitive decision making relies on experience, judgement and gut feeling rather than formal data analysis.

  3. 3

    Define a decision tree.

    Model answer

    A decision tree is a diagram representing different options, possible outcomes and their associated probabilities and financial values.

  4. 4

    State the formula for calculating expected value.

    Model answer

    Expected value is calculated by multiplying each possible outcome by its probability and summing the results: EV = Σ(probability × outcome value).

  5. 5

    What does each term in the expected value formula represent?

    Model answer

    Probability refers to the likelihood of each outcome occurring (expressed as a decimal or fraction), and outcome value refers to the financial return associated with that outcome.

  6. 6

    When would a manager use the expected value calculation?

    Model answer

    When comparing different options that have multiple possible outcomes with known probabilities, to determine which option offers the highest average return.

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