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.

Missed Classes Final Grade Missed Classes Final Grade 4 81 2 84 7 79 0 90 2 93 5 86 5 70 2 95 0 96

a. Calculate the sample covariance.

b. Calculate the sample correlation coefficient.

c. Describe the relationship between x and y.

AppendixLO1