A polling company attempts to predict the outcome of a presidential election, but only contacts people who subscribe to major political journals.
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it is also used in political polling
They are an example of cluster sampling and are used because it is impractical to station interviewers at every polling place.
It means that if the poll was taken over and over again, the results would match the population 95% of the time.
The five steps of the polling process typically include: 1) Defining the objectives - determining what information is needed and why; 2) Designing the poll - creating questions that are clear, unbiased, and relevant; 3) Sampling - selecting a representative group from the population to ensure accurate results; 4) Collecting data - administering the poll and gathering responses; and 5) Analyzing and reporting results - interpreting the data and presenting findings in a clear and meaningful way.