population statistics

What Are The Sources Of Population Data?

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What Are The Sources Of Population Data? The primary sources of the population data on the population size, characteristics and demographic structure are the census, projections, the registrations, migration reports and the surveys. What are the different types of population data sources? The Census: Census is the single largest source of data for population studies

What Percentage Of The Population Do You Need In A Representative Sample?

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What Percentage Of The Population Do You Need In A Representative Sample? For populations under 1,000, a minimum ratio of 30 percent (300 individuals) is advisable to ensure representativeness of the sample. For larger populations, such as a population of 10,000, a comparatively small minimum ratio of 10 percent (1,000) of individuals is required to