Through a process called __________ sampling,the pollster makes a list of all the geographical units in the country and groups them by the size of their population.

Question

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Stratified sampling is a method used by pollsters to ensure that each group (stratum) within a population is represented proportionally in the sample. In this case, the pollster groups geographical units by population size and then selects a random sample from each group to create a representative sample of the entire population. This helps to minimize sampling bias and increase the accuracy of the poll results.

Through a Process Called __________ Sampling,the Pollster Makes a List