Which of the following is a statistical tool that measures a country's overall achievement in terms of health, education and income?
- A.Human development index
- B.Per capita income
- C.Life expectancy
- D.Political stability
Show answer
Correct answer: A. Human development index
Explanation
The correct answer is A, the Human Development Index. It is the composite measure that puts health, education and income together in a single figure between 0 and 1, built as the geometric mean of one index for each of the three dimensions, and published by the UNDP since 1990. Option B, per capita income, is only one of the three components; taken alone it tells us what an economy produces for each person but nothing about how long people live or how long they stay in school, which was the very criticism that produced the HDI. Option C, life expectancy at birth, is likewise a single indicator, the one that stands for the health dimension. Option D, political stability, is not part of the index at all; it appears in governance ratings published by other bodies. The word to notice in the question is overall, which signals a composite index rather than a single indicator.