In: Statistics and Probability
4. A statistical researcher wishes to investigate the relationship between a student’s study time and their ultimate exam grade for that exam. The following data is determined:
X=study time(hours) |
4 |
7 |
8 |
9 |
12 |
Y=exam grade (1 to 25 scale) |
11 |
16 |
14 |
22 |
17 |
Ex=40 Ex2=354 and Exy=670
Ey=80 Ey2=1346