An elementary school teacher is interested in the relation between sugar consumption and activity level in preschool children. The teacher gives 30 preschool children from the preppy preschool playland either 0 milligrams, 20 milligrams, or 50 milligrams of sucrose (i. E., sugar) in a breakfast drink. He then observes their behavior for 30 minutes during their morning outdoor play period and codes their activity level. What is the population? What is the sample? What data type has he collected

An elementary school teacher is interested in the relation between sugar consumption and activity level in preschool children. The teacher gives 30 preschool children from the preppy preschool playland either 0 milligrams, 20 milligrams, or 50 milligrams of sucrose (i. e., sugar) in a breakfast drink. He then observes their behavior for 30 minutes during their morning outdoor play period and codes their activity level. The population is 30 people. The sample are the children and the type of data she collects is called experimental data as she is observing the effects of a treatment.

The population is constituted by preschool children in general, as it is the human group whose reaction the teacher wants to assess. In order to achieve her purpouse she uses a sample, the 30 children in her class.

The type of data she collects is called experimental data as she is observing the effects of a treatment (sugar consumption) in a controlled environment conditioned by the needs of the research and she is storing the results in order to draw conclusions from them.