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The symbolic function substage of preoperational thought occurs roughly between the ages of
Stratified Random Sampling
A probability sampling method in which a population is divided into subpopulation groups called strata; individuals are then randomly sampled from each of the strata.
Psychology Majors
Students specializing in the study of the human mind, behaviors, and emotions in their academic pursuit.
Haphazard Sampling
A non-systematic and random method of selecting samples, lacking any specific structure or plan.
Cluster Sampling
A probability sampling method in which existing groups or geographic areas, called clusters, are identified. Clusters are randomly sampled and then everyone in the selected clusters participates in the study.
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