Segment a market and assess the trade-offs
Group customers using geographic, demographic and psychographic characteristics, then judge whether segments are useful to serve.
Section 3.1 · The nature of marketing
Cambridge International AS & A Level Business 9609, 2026–2028 syllabus and 2029 syllabus, section 3.1.6. Cambridge states that the 2029 syllabus has no significant changes affecting teaching. This lesson maps only its named section; other sections and full paper practice remain separate. Written practice is self-checked
Before you begin
- No previous business course is assumed. Use the lesson's definitions before applying them to the business context.
Work on paper. Try each question before revealing help, and explain why your method works.
Quick readiness check
Which basis is geographic segmentation?
What you will learn
- Distinguish three segmentation methods
- Explain how segmentation can improve marketing fit
- Assess the cost and limitations of segmenting
Segments group customers in different ways
Geographic segmentation uses location or local conditions. Demographic segmentation uses characteristics such as age, household composition or income. Psychographic segmentation uses lifestyle, interests, attitudes or values.
These methods can be combined, but the business should choose characteristics that relate to a need or buying decision. A description such as 'young people' may be too broad to guide a useful offer.
Segmentation helps focus, but adds complexity
A relevant segment can help a business tailor product features, messages, channels and service. It can improve resource allocation and reveal unmet needs.
Segmentation requires reliable data and may increase design, stock, advertising and service costs. Groups can be internally diverse, change over time or be too small to reach profitably. Respect privacy and applicable rules when collecting customer information.
Pause and explain
A firm groups buyers by outdoor lifestyle and values. Which basis is most relevant?
Worked example
A sports retailer groups customers by city, age band and interest in long-distance running. Identify each segmentation basis and explain one benefit.
Show the worked solution
- City is geographic.
- Age band is demographic; running interest is psychographic or behavioural context.
- Use the combined picture to tailor relevant offers and test response.
Answer City is geographic, age band is demographic, and interest in distance running reflects lifestyle or psychographic characteristics. Together they may help the retailer select locally relevant products and advice, though the group must be large and reachable enough to justify the cost.
Try a topic test
Choose Easy, Normal or Difficult. Save your answers and open worked review after finishing.
Test this topic →From guided practice to a new situation
Write your answer and reasoning first. Use a hint only if you are stuck. The model solution is for self-checking; your written work is not automatically marked.
A meal-delivery service wants to serve students near two campuses. Suggest one geographic and one demographic variable, then explain a limitation.
Give me a hint
Choose variables that can inform delivery or offer decisions.
Compare my reasoning
- Campus area or travel radius is geographic.
- Student status or age band may be demographic.
- Do not assume all students have the same budget or diet.
It could segment by campus or delivery radius and by student status or age band. A limitation is that these variables do not reveal every student's budget, schedule or food preference, so further research may be needed.
Look for these in your work
- Both bases are classified
- Variables connect to service decisions
- A within-segment difference is noted
A clothing firm groups customers by stated interest in low-impact materials. Explain how this could shape a product and promotion decision.
Give me a hint
Connect a psychographic insight to specific choices, then test the response.
Compare my reasoning
- The group is defined by values or attitudes.
- The firm could test material sourcing or product information relevant to that interest.
- Promotion should make verifiable claims and measure response.
The firm could test a line using lower-impact materials and explain the sourcing evidence to this segment. It should avoid vague environmental claims and compare customer response and costs before expanding the offer.
Look for these in your work
- Psychographic basis is understood
- Product and promotion are linked
- Evidence and claim accuracy are considered
A retailer creates six versions of every product for different segments. Explain a possible benefit and why the approach may be inefficient.
Give me a hint
Consider better fit alongside added complexity and scale.
Compare my reasoning
- More variants may match customer preferences.
- Extra variants add forecasting, stock and marketing complexity.
- Compare incremental sales or contribution with the added cost.
Variants may improve fit and attract customers with different preferences, but six versions can fragment demand, increase inventory and promotion costs, and create unsold stock. The retailer should test whether incremental contribution covers the added complexity.
Look for these in your work
- Customer-fit benefit is explained
- Operational cost is identified
- Decision uses incremental evidence
Common mistakes
- Confusing where people live with their attitudes
- Assuming everyone in a segment has identical needs
- Collecting more personal data than is needed or permitted
What can you explain now?
Which basis is geographic segmentation?
Compare with the explanation
Customers' location or local conditions
Geographic segmentation groups by place.
After trying it yourself, choose your next review. This is your self-assessment.
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Make it stick
How do geographic, demographic and psychographic segmentation differ, and when is a segment worth serving?
If you needed the solution, close it and solve the problem again from a blank page. A correct answer is stronger when you can explain the reason for each step.