Section 14

Question 1

“The symbol for the coefficient of determination is r. This statement is true or false

Answer 1

False

Question 2

For a given value of the pearson r, the coefficient of determination is computed by:
A. Taking the square root of r.
B. Squaring r.

Answer 2

B. SQUARING R

Question 3

“For an r of .60, the ability to predict is 36% better than zero.” This statement is true or false

Answer 3

True

Question 4

When the coefficient of determination equals .70, what percentage of the variance on one variable is not predicted by the other variable?
A. 70%
B. 49%
C. 0%
D. Some other percentage

Answer 4

C. 0%

Question 5

When r=.20, the percentage of variance accounted for is 20%. This statement is true or false.

Answer 5

False