The Pearson correlation between X1 and Y is r = 0.50 and the correlation between X2 and Y is r = 0.20. How much variance for the Y scores is predicted by using both X1 and X2 as predictor variables in a multiple regression equation?
A) ?0.25 or 25%
B) ?0.29 or 29%
C) ?0.70 or 70%
D) ?It cannot be determined from the information given.
D
You might also like to view...
Which of the following systems does not receive major portions of a drug rapidly due to a high volume of drug flow?
a. muscles b. heart c. brain d. kidney
Why did the first asylums aggravate the conditions of the mentally ill?
a. The conditions were overcrowded and there was no treatment. b. The doctors were cruel. c. The patients refused treatment. d. The patients were released too soon.
A person is having extreme difficulty with their working memory. Which part of the brain might be involved with this issue?
A. the hippocampus B. the hypothalamus C. the posterior temporal lobe D. the occipital lobe
A child who cannot concentrate, has low energy, poor self-esteem, and has a greater risk for diabetes, heart disease, and high blood pressure may not be getting enough of which of the following?
A. Sun B. Physical activity C. Breakfast D. Outside air