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

Missed Classes Final Grade Missed Classes Final Grade 4 74 2 84 6 79 0 90 1 93 5 86 4 70 2 95 0 96

a. Construct a scatter plot for these data.

b. Calculate the slope and the y-intercept for the regression equation.

c. Provide an interpretation for the value of the slope.

d. Predict the final grade for a student who missed five classes.

e. Calculate the SST.

f. Partition the SST into the SSR and the SSE.

g. Verify your results using Excel.

AppendixLO1