Answer:
8 - positive
9- no correlation
10- negative
11- positive
12- No correlation
13- negative
14- no correlation
15- no correlation
Explanation:
8- Positive because the more hours a person has driven, the more number of miles he/she drives increases.
9- the number of siblings a student has should not affect the grade they have in math class
10- negative because as a car gets older, the value decreases
11- positive because the longer a cd is out the more sales they get
12- In a logical sense, it could be positive, because someone who dropped out of highschool will get paid less than someone who went to school for 18 years and graduated with a hs diploma. it can also mean no correlation. therefore I think it is positive.
13- negative because the more songs someone downloads, the more the ipods space decreases
14- no correlation, the amount of computers in your house does not change how much you message your friends
15- no correlation, your house can be 3 years old and have 5 people living in it