Every twenty-fifth person who subscribed to a weekly news magazine was contacted by market researchers to complete a survey of opinions regarding the magazine's contents. The researchers were applying the technique known as

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The researchers were using random sampling by selecting every twenty-fifth person to complete the survey. Random sampling is a method of selecting a sample from a larger population in which each member of the population has an equal chance of being included in the sample.

Every Twenty-Fifth Person Who Subscribed to a Weekly News Magazine