The National Assessment for Educational Progress (NAEP) is a U.S. government organization that assesses the performance of
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The National Assessment for Educational Progress (NAEP) is a U.S. government organization that assesses the performance of students and schools at all levels across the United States. The following table presents the percentage of eighth-grade students who were found to be proficient in mathematics, and the percentage who were found to be proficient in reading in each of the 10 most populous states.
a. Construct a scatterplot with reading proficiency on the horizontal axis and math proficiency on the vertical axis. Is there a linear relationship?
b. Compute the correlation between reading proficiency and math proficiency. Is the linear association positive or negative? Weak or strong?
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