SOLUTION: 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. Nu

Algebra ->  Probability-and-statistics -> SOLUTION: 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. Nu      Log On


   

Question 634142: 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.
Number of absences Final Grade

0 95
1 91
2 82
3 69
4 67
5 58
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,



Excel CORREL function

r = -.9866    



Regression line equation: y+=+ax%2Bb   

www.alcula.com/calculators/statistics/linear-regression/

 y = -7.7143x + 96.286

grade mising 3.5 days = 69