Suppose I recorded the attendance of my students in a recent statistics class because I wanted to investigate the relationship between the number of classes they missed and their final grades. The following table shows this data for a random sample of nine students. This data can also be found in the Excel file missed classes. xlsx.

a. Calculate the sample covariance.

b. Calculate the sample correlation coefficient.

c. Describe the relationship between x and y.

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Missed Final Classes Grade Missed Final Classes Grade 81 79 93 70 96 95