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Cluster sampling Essay Topics & Paper Examples

Population Sampling Methodologies

Population is defined as including all items with the characteristic one wishes to understand. Because there is seldom enough time or money to gather information from everyone or everything in a population, the goal is to find a representative sample (or subset) of that population. For example, a researcher might study the success rate of a new ‘quit smoking’ program on a sample group of 50 patients, in order to predict the effects of the program if it were made available nationwide. Here the superpopulation is “everybody in the country, given access to this treatment” – a group which does not exist, since the program isn’t yet available to all. Sampling Frame: Sampling Frame refers to the selection of a…