OCR A Level Business: Risk and uncertainty and Opportunity cost (H431) – Revision Notes

Condensed notes for the Risk and uncertainty and Opportunity cost content (numbered 1.7 and 1.8 on this site; the specification itself does not number them) of the OCR A Level Business specification (H431, Version 2.1, January 2026). For full explanations and worked examples, use the study guide. Test yourself with the practice questions. For the wider area see the area revision notes. Course pages: the OCR A Level Business hub and the checklist. To find weak spots first, take a free 10-minute diagnostic.

Key definitions

Term	Meaning
Risk	The possibility that a decision ends worse than hoped
Reward	The benefit if the decision works: profit, growth, return on money invested
Quantifiable risk	A risk where likelihood or loss can be given a number from data or research
Unquantifiable risk	A risk with no reliable basis for a number
Uncertainty	Not knowing what will happen, or being unable to give reliable probabilities
Internal cause	Source of uncertainty inside the business
External cause	Source of uncertainty outside the business
Entrepreneur	A person who takes the risk of starting or running a business for the reward
Opportunity cost	What the second-best use of the same resources was worth, lost by choosing another
Expected value	Sum of each outcome multiplied by its probability (the standard form)

Risk and reward

• Higher potential reward usually goes with higher risk. This is a tendency, not a rule.
• Evaluate it: is the extra reward worth the extra risk? Could the business survive the worst case? What are its objectives (survival or growth)? Who bears the loss?
• Compare options on both expected reward and spread of outcomes, not on the average alone.

Method: expected value

1. List each outcome as a net figure.
2. Multiply each by its probability.
3. Add the results. Probabilities must total 1.
4. Compare with the alternatives, then comment on risk, the worst case and the reliability of the probabilities.

Worked reminder: Axtell Joinery, a small furniture maker, may launch a new range. A hit gives +£50,000 (probability 0.6) and a flop gives -£20,000 (probability 0.4). Expected value = 0.6 × 50,000 + 0.4 × -20,000 = 30,000 - 8,000 = £22,000. The worst case is a £20,000 loss, so the question is whether Axtell could bear it.

Quantifiable and unquantifiable risk

	Quantifiable	Unquantifiable
Basis	Past data, records, research	Judgement, no reliable data
Examples	Bad debts, machine breakdowns, insured events	A rival’s new technology, a fashion shift, overseas politics
Tools	Expected value, insurance, provisions, budgets	Scenarios, flexibility, cash reserves, contingency plans
Weakness	False precision; the past may not repeat	Nothing to compare; may be ignored or cause delay

Reducing risk

Method	Benefit	Limit
Research and forecasting	Fewer wrong decisions	Cost; results can mislead
Spreading (markets, suppliers, products)	One failure does not sink the business	Lost economies of scale; management strain
Phasing or piloting	Caps the possible loss	Rivals may move first
Insurance	Transfers insurable losses	Premium; does not cover strategic failure
Contracts	Fixes costs or sales	Locks the business in
Financial prudence	Survives a bad period	May slow growth
Contingency plans	Cuts the cost of a shock	Time and cost; cannot cover every event

Consequences of poor risk management

• Business: losses, cash-flow crisis, lost sales, reputation damage, higher borrowing costs, closure.
• Owners and shareholders: lost dividends and capital. Employees: redundancy or short-time work. Lenders: late repayment. Suppliers: unpaid bills and lost custom. Customers: lost product or support. Community: lost jobs and spending.
• Judge severity by the loss compared with the firm’s resources.

Risks faced by an entrepreneur

• Loss of savings; personal assets at risk if liability is unlimited.
• No guaranteed income.
• Opportunity cost of the salary and security given up.
• Business failure and its effect on family and reputation.
• Weigh these against the reward and the entrepreneur’s savings, experience and support.

Uncertainty

Internal causes	External causes
Key staff leaving	Economic change, interest and exchange rates
Success of a new product	Competitor action
Reliability of equipment	Technology and regulation
Accuracy of own cost estimates	Tastes, weather, politics

Effects of uncertainty on a business:

Area	Effect
Aims and objectives	Targets become ranges; survival may outrank growth
Planning	Shorter horizons, flexible budgets, scenario plans
Decision making	Delay, lower-risk choices, decision trees and sensitivity analysis
Business analysis	SWOT and PESTLE inputs may change quickly
Forecasting	Ranges and several scenarios replace single figures

Evaluate the impact by asking how large the uncertainty is, how soon it resolves, and who bears the effect.

Opportunity cost

Method in steps

1. List the realistic alternatives for the same resource.
2. Value each one.
3. Rank them and note which was chosen.
4. Opportunity cost = the next best alternative only, not all those rejected.

Worked reminder: Axtell has £40,000 and chooses a kiln worth £5,200 a year (13.0%). The alternatives are staff training worth £4,600 a year (11.5%) and a deposit worth £800 (2.0%). The opportunity cost is £4,600 a year, the training. The kiln wins by £600 a year on these figures.

Impact on decision making: it forces comparison of options, shows that a positive return can still be a poor choice, applies to time as well as money, interacts with risk (the next best option may be safer), and relies on estimates.

Answering “evaluate”, “analyse” and “identify”

• Identify: name the item and give its value if the data allows. For opportunity cost, name one alternative.
• Analyse: make a point, show the cause and effect, and apply it to the business in the case. Calculations help only when you say what they show.
• Evaluate: set arguments for against arguments against, then conclude in a way that depends on the facts, such as the size of the loss compared with the firm’s resources, or the time frame.
• Explain: give the meaning, then a reason or an example drawn from the case.

Must-know distinctions

• Risk and uncertainty: risk can be measured, uncertainty cannot. Decision trees and expected value handle the first better than the second.
• Risk and reward: the pair of ideas to weigh against each other, never one alone.
• Quantifiable and unquantifiable: whether a number can be defended, not whether the risk is large.
• Internal and external causes: whether the business controls the source.
• Opportunity cost and total cost: opportunity cost is the best forgone use, not the money spent.

Quick self-test

1. Define opportunity cost.
2. Axtell expects a hit with probability 0.6 (+£50,000) or a flop (-£20,000). Calculate expected value.
3. Axtell’s unit price is £12 and variable cost is £7. Fixed costs are £30,000. Calculate break-even output, then the margin of safety as a percentage of forecast sales of 6,800 units.
4. Axtell has £40,000. A kiln earns £5,200 a year, training £4,600 and a deposit £800. State the opportunity cost of choosing the kiln and the percentage return on the deposit.
5. Classify as quantifiable or unquantifiable: (a) bad debts based on five years of records, (b) a new rival with unknown technology.
6. Classify as internal or external: (a) a key joiner resigns, (b) interest rates rise.
7. Give three ways of reducing risk.
8. Name the five business activities the specification says uncertainty affects.
9. Give two specific risks faced by an entrepreneur.
10. Give two reasons expected value can mislead.

Answers

1. What the second-best use of the same resources was worth, lost by choosing another use.
2. 0.6 × 50,000 = 30,000; 0.4 × -20,000 = -8,000; total £22,000.
3. Contribution = 12 - 7 = £5; break-even = 30,000 ÷ 5 = 6,000 units. Margin of safety = 6,800 - 6,000 = 800 units, so 800 ÷ 6,800 = 11.8% (to 1 decimal place).
4. £4,600 a year (training, the next best). Deposit return = 800 ÷ 40,000 = 2.0%.
5. (a) Quantifiable. (b) Unquantifiable.
6. (a) Internal. (b) External.
7. Any three: research, spreading, phasing or piloting, insurance, contracts, financial prudence, contingency planning.
8. Aims and objectives, planning, decision making, business analysis, forecasting.
9. Any two: loss of savings, no guaranteed income, opportunity cost of salary given up, business failure.
10. Probabilities are estimates; it is an average, not a likely single result; it ignores non-financial effects and the size of the worst case.

Where marks are usually lost

• Equating opportunity cost with the sum spent, or with every option rejected.
• Using the same example for risk and for uncertainty without showing the difference.
• Stating that risk and reward rise together without evaluating whether the reward is worth it.
• Calculating expected value and stopping, with no comment on reliability or the worst case.
• Naming stakeholders without saying how each is affected by poor risk management.
• Listing ways to reduce risk without judging which suits this business.
• Mixing up internal and external causes of uncertainty.
• Writing generic points on uncertainty that are not tied to the business in the case.
• Giving a final judgement that restates the points without weighing them.

Frequently asked questions

What is the difference between risk and uncertainty? Risk can be measured, for example with probabilities from past data, while uncertainty cannot be given reliable probabilities. Decision trees and expected value handle risk, but uncertainty is managed through flexibility, scenario planning and cash reserves.

How does uncertainty affect business objectives? Under uncertainty, targets may become unrealistic or need to be set as ranges, and survival may take priority over growth. Planning and investment decisions may also be delayed until the situation is clearer.

Does a higher reward always mean a higher risk? Higher potential reward usually goes with higher risk, but this is a tendency rather than a rule. An evaluation should ask whether the extra reward justifies the extra risk and whether the business could survive the worst outcome.

Official syllabus

Source: OCR, Advanced GCE in Business (H431), Version 2.1, January 2026, for first assessment in 2017 with final assessment in summer 2027, area of study Business objectives and strategy, the Risk and uncertainty and Opportunity cost content (numbered 1.7 and 1.8 on this site, not in the specification).