# of absences/final grade
0 91
1 88
2 85
3 78
4 66
5 51

Find the correlation coefficient for the data.
Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days.

Question

# of absences/final grade
0                      91
1                      88
2                      85
3                      78
4                       66
5                      51

Find the correlation coefficient for the data.
Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days.

zarkon · Answer

r=-.950896325398

$$\hat{y}(x)=-7.8x+96$$

$$\hat{y}(3.5)=-7.8*3.5+96=68.7$$