The regression equation is used to...

Question 1 options:

...predict the value of the response variable given a value of the explanatory variable

...predict the value of the explanatory variable based of the response variable

...measure the association between two variables

all of the above

none of the above

What does it indicate if r = -1.00?

Question 2 options:

Dependent variable can be perfectly predicted by the independent variable

All of the variation in the dependent variable can be accounted for by the independent variable

High values of one variable are associated with low values of the other variable

Coefficient of determination is 100%

All of the above

A Pearson correlation coefficient of 0.80 infers...

Question 3 options:

Almost no correlation because 0.80 is close to 1.00

80% of the variation in one variable can be explained by the other

Coefficient of determination is 0.64

Coefficient of determination is 0.20

None of the above

Which value indicates a stronger correlation than 0.25?

Question 4 options:

-0.30

-0.50

0.30

All of the above

None of the above