At the Stock and Watson (http://www.pearsonhighered.com/stock_watson)website go to Student Resources and select the option "Datasets for Replicating Empirical Results." Then select the "Test Score data set used in Chapters 4-9" (caschool.xls)and open the Excel data set. Next produce a scatterplot of the average reading score (horizontal axis)and the average mathematics score (vertical axis). What does the scatterplot suggest? Calculate the correlation coefficient between the two series and give an interpretation.
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