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Question
A political polling organization has decided to do a study that explores teachers' opinions about school vouchers. To be representative the group seeks data from 1200 practicing teachers in four regions of the United States. The group used an electronic survey and when 1200 surveys are returned, the data are analyzed. This best represents which of the following strategies?a. Cluster sampling
b. Random sampling
c. Stratified sampling
d. Quota sampling
Answer
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