50 points - !

(if you could at least answer one of these, i would be extremely grateful! )

1. what is the definition of correlation?
a measure of the strength of a linear relationship between two variables
b. proof that one variable causes another
c. a measure of the strength of causation of one variable on another
d. an implication of causation

2. which of the following values for r suggests that one variable causes another?
a. -0.7
b. 0
c. 0.9
d. none of the above

3. what does an r value of -0.89 suggest about two variables?
a. that an increase in the independent variable causes the dependent variable to decrease
b. that an increase in the independent variable causes the dependent variable to increase
c. as the independent variable increases, the dependent variable increases
d. as the independent variable increases, the dependent variable decreases

(if you could at least answer one of these, i would be extremely grateful! )
!