Choose the single best answer: If you have a Pearson correlation coefficient of
ID: 3398081 • Letter: C
Question
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.
Explanation / Answer
Choose the single best answer: If you have a Pearson correlation coefficient of