Examlex
The available data on various countries of the world show that there is an inverse relationship between population densities and per capita GDP.
Random Sampling
A method of selecting a sample from a statistical population in such a way that every possible sample has an equal chance of being selected.
Multistage Cluster Sampling
Sampling based on first sampling large units such as states or provinces and then sampling smaller units such as towns, city blocks, and so on.
Sampling Frames
The list or database from which a sample is drawn, representing the entire population or target group for a specific study.
Census
A study of every member of a population.
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