Risk, Statistics and Short-term Decisions
Probability, expected value, dispersion, normal distribution, break-even, make-or-buy and limiting factors.
How to study the CIMA Certificate
Secure each subject's concepts and calculations before using short business scenarios for application. Static study assets do not reproduce every computer-marked interaction or combine the four subjects into one official examination.
Core concepts
Concept 1
Calculate and interpret risk measures.
Exam cue: Check probabilities sum to one.
Concept 2
Apply cost-volume-profit analysis.
Exam cue: Use contribution, not revenue, for scarce resources.
Concept 3
Optimise short-term choices under constraints.
Exam cue: Include opportunity cost where capacity is constrained.
Risk pitfalls and guardrails
Treating expected value as a guaranteed outcome.
Guardrail: Do not combine subjects, treat the 0-150 scale as a percentage, or rely on a remembered label without checking timing, units, assumptions and facts.
Using fixed cost in a make-or-buy decision when unavoidable.
Guardrail: Do not combine subjects, treat the 0-150 scale as a percentage, or rely on a remembered label without checking timing, units, assumptions and facts.
Ranking products by contribution per unit instead of per limiting factor.
Guardrail: Do not combine subjects, treat the 0-150 scale as a percentage, or rely on a remembered label without checking timing, units, assumptions and facts.
Memory anchors
Expected value
Expected value is the probability-weighted average outcome.
Margin of safety
Margin of safety is expected or actual sales above break-even sales.
Limiting factor
A limiting factor constrains activity and should be allocated by contribution per scarce unit.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
A project has a 0.3 probability of earning £80,000 and a 0.7 probability of earning £20,000. What is expected profit?
What is the main limitation of using expected value for a one-off decision?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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