IB Business Management HLTopic 7 — Exam Skills and AssessmentPapers 1 & 2Exam skill~9 min read
Scoring Full Marks on 4-Mark Questions
Four-mark questions are marked as two plus two. Two points, each one backed by something from the case study. Miss the evidence and you halve your score, however good the business theory is.
📘 What you need to know
Four-mark questions almost always want two developed points, marked 2 + 2.
Explain [4] normally asks for one advantage and one disadvantage.
Describe [4] normally asks for two factors, limitations or reasons.
Each point earns one mark for knowledge and one mark for application — the evidence from the case study.
Construct [4] asks you to draw or complete a diagram, usually a chart, using data from the case study.
On a chart, marks come from labelled axes, accurate lines and identified key values such as the break-even point.
The 2 + 2 shape
Think of a four-mark answer as two mini-answers side by side. Each one names a business idea and then proves it against the scenario. Two ideas with no evidence scores two out of four. One idea explained beautifully also scores two out of four.
Write two short paragraphs rather than one long one. It makes both points easy for the examiner to find.
Explain questions at 4 marks
The usual wording is “explain one advantage and one disadvantage”. That instruction is also the plan for your answer: one paragraph each, and a fact from the case study inside both.
WORKED EXAMPLE
Explain one advantage and one disadvantage for Verdant Tools of switching to a just-in-time stock system. [4]
Verdant Tools makes garden equipment in one factory. It currently holds three months of raw materials in a rented warehouse costing $4,800 a month. Its two main suppliers are in a different country and deliveries have been late twice this year.
Advantage — the business idea
Just-in-time cuts the stock a business holds, freeing up cash and storage space.
Advantage — the evidenceVerdant could reduce or drop the $4,800 monthly warehouse rent, improving its cash flow.Disadvantage — the business idea
Just-in-time leaves no buffer stock, so any supply problem stops production immediately.
Disadvantage — the evidenceVerdant’s suppliers are overseas and have already been late twice this year, so a delay would halt the factory.2 + 2 = 4 marksNotice that both facts came straight out of the scenario. That is where the application marks live.
Describe questions at 4 marks
Describe at four marks works the same way, but instead of an advantage and a disadvantage it usually wants two of the same kind of thing — two limitations, two reasons, two factors. Read the question closely, because giving one of each will cost you.
WORKED EXAMPLE
Describe two limitations of the market research Verdant Tools has carried out. [4]
Before launching a new cordless hedge trimmer, Verdant Tools ran one focus group of eight existing customers at its factory, and read a trade magazine article on garden tool sales published in 2019.
Limitation 1 — the idea
A very small sample cannot represent the whole market.
Limitation 1 — the evidenceEight existing customers were asked, so the views of people who buy rival brands are missing entirely.Limitation 2 — the idea
Secondary data goes out of date and was gathered for someone else’s purpose.
Limitation 2 — the evidenceThe trade article is from 2019, so it says nothing about current demand for cordless tools.Two limitations, two pieces of evidence = 4 marksBoth points are limitations. Swapping one for a benefit would answer a different question.
A neat trick under pressure: write your two points as two short paragraphs, and underline the case study fact in each. If you cannot find something to underline, the point is not finished.
Construct questions
Construct asks you to build a diagram from case study data — most often a break-even chart. The marks are mechanical, which makes them some of the most reliable in the paper. You get credit for labelling the axes, drawing the fixed cost, total cost and total revenue lines accurately, and marking the key values.
Fixed costs are flat, total costs start where fixed costs start, and total revenue always starts at the origin.
The number behind the chart
break-even output = fixed costs ÷ (price − variable cost per unit)
WORKED EXAMPLE
Find the break-even output and margin of safety for the chart above.
Step 1: contribution per unit$20 − $8 = $12Step 2: break-even output$12,000 ÷ $12 = 1,000 unitsStep 3: break-even revenue1,000 × $20 = $20,000Step 4: margin of safety at 1,800 units1,800 − 1,000Margin of safety = 800 unitsThe chart and the calculation must agree. If your drawn crossing point is nowhere near 1,000, check the lines before the maths.
🧩 Drawing a break-even chart under time pressure
Label both axes first. Output in units across the bottom, costs and revenue in currency up the side.
Draw fixed costs as a flat horizontal line at the fixed cost value.
Draw total costs starting from the fixed cost line at zero output and rising by the variable cost per unit.
Draw total revenue from the origin — at zero output there is no revenue.
Mark and label the break-even point where total revenue crosses total costs.
Show the margin of safety between break-even output and budgeted output, and label it.
💡 Exam tip
Answer in two paragraphs so the examiner can see both points without hunting.
Quote a number or a name in each point. That is the application mark, and it takes six words.
Check whether the question wants two of the same thing or one of each. “Two limitations” is not “one advantage and one disadvantage”.
On charts, label everything — axes, all three lines, the break-even point, the margin of safety.
Use a ruler and pencil for construct questions so mistakes can be redrawn.
Do not evaluate. Four-mark questions do not reward a judgement, so the sentence “overall I think” is wasted time.
⚠ Common mix-up
Writing one point in great depth. Depth cannot buy the second point’s two marks.
Repeating the case study instead of using it as evidence for an idea of your own.
Starting the total revenue line above the origin. No sales means no revenue.
Drawing total costs from zero. Total costs start at the fixed cost value.
Leaving axes unlabelled. Those are free marks and they are the first ones checked.
Confusing margin of safety with profit. One is measured in units of output, the other in money.
Up next: Scoring Full Marks on 6-Mark Questions — three points, each developed into a chain of reasoning.
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