You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Human development index includes A/E: and explain in detail?
Human Development Index (HDI) is defined as a composite index combining indicators representing three dimensions: 1)Longevity (life expectancy at bih) 2)Knowledge (adult literacy rate and mean years of schooling) 3)Income (real GDP per capita in purchasing power parity in US dollars). The HDI values ranges between 0 to1. The HDI value for a country shows the distance that it has already travelled towards maximum possible value to 1 and also allows comparison with other countries. Ref : Park's Textbook of Preventive and Social Medicine; 18th edition; Page-16