Assume that you have been assigned to do a national level public opinion research study. The universe is 1.27 billion people, in which 51% are females and 49% males. Illiteracy level is 34%, 27% are in the urban areas and 32% are from lower income group, 45% and 23% are from middle and higher income groups respectively. If you have decided to go for 1270 sample size for your study, then explain in detail the configuration of your sampling units. Adequate justifications need to be given in the decision you are taking to include the respondents from these categories of people.
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If we have to just assume than why to answer the question
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Literacy is a key skill and a key measure of a population’s education. In this entry we discuss historical trends, as well as recent developments in literacy.
From a historical perspective, literacy levels for the world population have risen drastically in the last couple of centuries. While only 12% of the people in the world could read and write in 1820, today the share has reversed: only 14% of the world population, in 2016, remained illiterate. Over the last 65 years the global literacy rate increased by 4% every 5 years – from 42% in 1960 to 86% in 2015.1
Despite large improvements in the expansion of basic education, and the continuous reduction of education inequalities, there are substantial challenges ahead. The poorest countries in the world, where basic education is most likely to be a binding constraint for development, still have very large segments of the population who are illiterate. In Niger, for example, the literacy rate of the youth (15-24 years) is only 36.5%.