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NotesEconomicsTopic 3.4Poverty
Back to Economics Topics
3.4.25 min read

Poverty

IB Economics · Unit 3

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Contents

  1. 1Absolute and relative poverty
  2. 2Measuring poverty
  3. 3Why poverty is hard to measure
  4. 4Exam-style question

Being poor can mean going hungry, or it can mean having far less than everyone around you.

Two kinds of poverty

1

Absolute poverty

Too little income to meet basic needs: food, clean water, shelter.

Basic needs
2

Relative poverty

Too little compared with others in the same country.

Compared

Corland: median income €2,000, so the relative poverty line (60%) is €1,200

HouseholdMonthly incomeRelatively poor?Absolutely poor?
Ana€1,800NoNo
Ben€1,000Yes: below €1,200No: basic needs met
Cara€250YesYes: cannot pay for food and rent

Write it like this in the exam

  • Absolute poverty: "an income below the level needed to meet basic needs such as food, clothing and shelter."
  • Relative poverty: "an income below a poverty line set as a percentage of median income, too low for the typical standard of living in the country."

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Some measures use one number; others combine several.

How poverty is measured

1

International poverty line

The World Bank's line: $3.00 a day since 2025 (it was $2.15).

Single
2

Minimum income standard

What the public agree a household needs for a decent life.

Single
3

Multidimensional Poverty Index

Ten signs of deprivation in health, education and living standards.

Composite

The MPI: poor if deprived in at least a third of the weighted indicators

DimensionWhat is checked
HealthNutrition, child deaths
EducationYears of schooling, school attendance
Living standardsCooking fuel, toilets, drinking water, electricity, housing, assets
Remember it as: Single: one income line. Composite: many signs of deprivation.

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Counting the poor sounds simple. It is not.

Why poverty is hard to measure

1

Which kind?

Absolute and relative measures can tell different stories.

Definition
2

Where is the line?

Just above it counts as not poor; it hides how far below people are.

The line
3

Income is not everything

Income misses wealth, health, schooling and clean water.

Scope
4

Hard-to-get data

Surveys miss informal income and homeless people.

Data
5

Prices differ

The same income buys more in some places than others.

Cost of living

The points to remember

  • A household on $2.90 a day and one on $1.00 count the same: both are below the line.
  • Relative poverty can rise while everyone's income grows, if the median grows faster.

Paper 1 asked this in May 2023, as part (a) for 10 marks.

IB-style questionExplain[10 marks]

Explain the difficulties involved in measuring poverty.

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How the 10 marks are given

MarksWhat your answer needs
9–10Theory fully explained, terms used correctly all the way through, the diagram included and fully explained
7–8Theory explained, terms mostly right, the diagram included and explained
5–6Theory partly explained, some terms, the diagram included
1–4Theory only described or stated; few relevant terms

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Text A reports that one household in six in Tessaly lives in relative poverty.

the term relative poverty.
[2 marks]

Related Economics Topics

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3.1.1What is GDP and how is it measured?3.1.2Real vs nominal GDP and comparisons3.1.3GDP and well-being3.1.4The business cycle
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