(Srinivasan, 1994) suggests poor data quality in HDI calculations, especially with respect to data details and regularity of calculation errors. The same author believes that the data used to measure the Human Development Index is in principle completely unreliable in principle due to inaccurate coverage of the research country and lack of reporting. Among other computational errors, especially concerning education, there are "contradictory concepts" depending on the country.
The Human Development Index (HDI) Composite Index measures the overall achievement of the country with three basic aspects of human development - longevity, knowledge, and decent living standards. It is measured by the life expectancy of purchasing power parity (PPP) dollars, education and adjusted earnings per capita. The Human Development Index is a summary, not a comprehensive measure of human development. The independent department explains the comprehensive terms of the private sector and voluntary sector. The private sector consists of individuals or organizations that operate for commercial purposes. Voluntary departments are targeted at various nonprofit organizations such as charitable organizations, housing associations, religious groups, self-help organizations.
The Human Development Index (HDI) is a standardized measure of average life expectancy, education, and per capita income around the world. It is an improved standard measure of happiness, especially for child welfare and human development. This aim is to simplify human development, but it is far more complicated than other indicators and a series of indicators. The report in 2007 shows that the World Human Development Index has increased slightly compared to last year's report. Overall improvements in developing countries, particularly in the group of least developed countries, have contributed to this growth. Significant improvements at the bottom are offset by the decline in the Human Development Index in high-income countries