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Evaluating Reports Based on Data Practice Test
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Q1
A school newsletter reports: “Students who use the library after school get higher grades.” The newsletter cites a survey of 40 students who were already in the library after school on one Tuesday. Of those students, 30 reported having an A or B average, and 10 reported a C average or lower. The newsletter concludes that using the library after school causes better grades for students at the school. Which critique best evaluates the claim?
A school newsletter reports: “Students who use the library after school get higher grades.” The newsletter cites a survey of 40 students who were already in the library after school on one Tuesday. Of those students, 30 reported having an A or B average, and 10 reported a C average or lower. The newsletter concludes that using the library after school causes better grades for students at the school. Which critique best evaluates the claim?