The correct option is C.
Explanation
The Human Development Index (HDI) is a composite index developed by the United Nations Development Programme (UNDP) to measure average achievement in three basic dimensions of human development: a long and healthy life, knowledge, and a decent standard of living.
Statement 1 is Correct: The HDI is calculated based on three dimensions: Health (measured by life expectancy at birth), Education (measured by mean years of schooling and expected years of schooling), and Resources/Standard of Living (measured by Gross National Income per capita). The index is the geometric mean of normalized indices for each of these three dimensions.
Statement 2 is Correct: In the calculation of the HDI, each of the three dimensions—Health, Education, and Standard of Living—is assigned an equal weight of 1/3. This ensures that no single dimension dominates the index, reflecting the principle that all three are equally essential for human development.
Statement 3 is Incorrect: The HDI score ranges from 0 to 1. According to the UNDP classification:
- Very High Human Development: 0.800 and above.
- High Human Development: 0.700–0.799.
- Medium Human Development: 0.550–0.699.
- Low Human Development: Below 0.550.
The HDI is a composite statistic of life expectancy, education, and per capita income indicators, where each dimension is weighted equally (1/3) and the final score ranges from 0 to 1, with higher values indicating higher development.