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A researcher for Procter & Gamble selects five states randomly,and then selects 10 supermarket chains within each of these states to call for a phone survey for a test market of a new shampoo.Which type of sampling procedure is being used?
Piagetian Stage
Piagetian Stages are phases in child development outlined by Swiss psychologist Jean Piaget, representing key steps in cognitive development.
Sensorimotor
Refers to a developmental stage in infants where they learn to interact with the world through physical movements and sensory experiences.
Concrete Operational
A stage in Piaget's theory of cognitive development, where children aged around 7-12 years gain the ability to think logically about concrete events.
Concrete Operations
a stage in Piaget's theory of cognitive development, where children aged 7 to 12 years become capable of logical thought processes but are not yet able to handle abstract reasoning.
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