Mathematics, 07.04.2020 12:21 krab38

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To find the average grades scored by students in science and math, the principal of a school sends a questionnaire to the top five students in each grade of the high school. Is the sample used by the principal random? Will a generalization from this sample be valid?
The sample used by the principal is . A generalization made from this sample is .

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To find the average grades scored by stude...