The number of hours 12 studentswatched television during the weekend and the scored of eachstudent who took a test the following Monday are listed below.
Hours | 0 | 1 | 2 | 3 | 3 | 5 | 5 | 5 | 6 | 7 | 7 | 10 |
Test | 96 | 85 | 82 | 74 | 87 | 68 | 76 | 70 | 66 | 65 | 75 | 50 |
a) Find linear regression equation using correct notation (forstatistics) the given problem, round coefficients to 3 decimals.(no sentence here)
b) What is value of the slope and itsmeaning in context of the problem? Make sure you include units.
c) What is the value of thecorrelation coefficient, does this indicates a negative orpositive
association and is correlation strong,weak or neither?
d) If a student watched 4 hours of TVduring the weekend, what is the student predicated test score
on the Monday exam? (to onedecimal)
e) If a student watched 6 hours of TVduring the weekend, what is the student predicated test score
on the Monday exam? (to onedecimal)
f) What is residual value for astudent that watched 6 hours of TV during the weekend?
Explain what it means, in context ofthe problem
