11. Which of the following correlation coefficients reflects the strongest relat

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Question

11. Which of the following correlation coefficients reflects the strongest relationship between two variables?

a. +.45

b. -.60

c. .00

d. +.55

12. The coefficient of determination is

a. the amount of error variance in a correlation coefficient

b. the square root of the correlation coefficient

c. the proportion of variance in one variable that is accounted for by another

d. an index of negative correlation

13. If the correlation between two variables is .00, we should conclude that

a. the variables are unrelated

b. the error variance is excessive

c. one variable can be predicted from the other

d. no linear relationship exists between the variables

14. A correlation that is statistically significant

a. contains no error variance

b accounts for more than 50% of the variance

c. is very unlikely to be zero

d. is important

15. Regression analysis is often used

a. to analyze experimental studies

b. to predict scores

c. to study curvilinear relationships

d. to analyze cross-lagged panel designs

16. In an experiment, the independent variable is

a. measured

b. eliminated

c. held constant

d. manipulated

11.b -.60

12.c the proportion of variance in one variable that is accounted for by another

13.d no linear relationship exists between the variables

14.c is very unlikely to be zero

15.b to predict scores

16.d manipulated

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