Choose the single best answer If you have a Pearson correlat

Choose the single best answer:

If you have a Pearson correlation coefficient of .30, what is the proportion of variance accounted for?

Select one:

a.

.09

b.

.90

c.

.60

d.

.30

Question 2

Suppose you find that the correlation between sleepiness and happiness is -0.65. What percentage of happiness is NOT associated with sleepiness?

Select one:

a. 58%

b. 42%

c. 65%

d. -65%

Question 3

Which of the following r values indicates the strongest relationship between two variables?

Select one:

a.

+0.65

b.

-0.89

c.

+0.10

d.

-0.10

Question 4

Which of the following r values indicates the weakest relationship between two variables?

Select one:

a.

+0.65

b.

-0.89

c.

+0.10

d.

-0.25

Question 5

When the correlation coefficient representing the relationship between X and Y is intermediate, then all of the following are true except

Select one:

a.

there is not a perfectly consistent association.

b.

there are different Y scores associated with a single X score.

c.

prediction of Y from a known X score has some error.

d.

all data points fall on the regression line.

Solution