Deck 31: Coefficient of Determination

Question 1

Which is NOT true about the coefficient of determination?

A) Its computation is r²
B) It is Pearson r
C) It is used to interpret values of the Pearson r
D) It is used to explain variance

Answer 1

B

Question 2

If r = .50, what is the coefficient of determination? _______________

Answer 2

25%

Question 3

For the above question, explain what this coefficient of determination means?

Answer 3

25% of variance in one variable is accounted for by the variance in the other variable.

Question 4

If a r² is .81, what percent of the variance in a variable is unexplained?

A) 1.19%
B) 21%
C) 19%
D) 119%

Question 5

In interpreting values of r in the .20 to .40 range this means that 84% to 96% of the variance on one variable is not accounted for by the other.