AQA A-Level Business 7132
What Is Business?
Managers, Leadership and Decision Making
Marketing Management
Operational Management
Financial Management
Human Resource Management
Analysing the Strategic Position of a Business
Choosing Strategic Direction
Strategic Methods: How to Pursue Strategies
Managing Strategic Change
Problems with Strategy and Why Strategies Fail
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.
When is expected value used, and how is it calculated?
How is net gain calculated, and what does it tell a decision maker?
What do the square and circular nodes represent in a decision tree, and why is it read backwards?
State the formula for calculating expected value.
State the formula for calculating net gain in decision tree analysis.
Questions from this subtopic
Each one with the model answer underneath.
- 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
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
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
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
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
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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