Why does the HDI use a geometric rather than an arithmetic mean?

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Question

Why does the HDI use a geometric rather than an arithmetic mean?

Accepted Answer

So that weakness in one dimension is not fully offset by strength in another — Award 1 mark. The dimensions are deliberately treated as complements rather than substitutes.

Answer

So that the index can exceed 1 for high-performing countries

Answer

So that income counts for more than health and education

Answer

So that weakness in one dimension is not fully offset by strength in another

Answer

So that distribution within the country is taken into account

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