Question 4 1. The coefficient of determination: a. Is a measure of the amount of

Question

Question 4 1. The coefficient of determination: a. Is a measure of the amount of variability in one variable that is shared by the other. b. Indicates whether the correlation coefficient is significant. c. Is the square root of the variance. d. Is the square root of the correlation coefficient.

Question 5 1. When interpreting a correlation coefficient, it is important to look at: a. The +/- sign of the correlation coefficient. b. All of these. c. The significance of the correlation coefficient. d. The magnitude of the correlation coefficient.

Explanation / Answer

(4.1) Coefficient of determination (r^2) shows how much of the variation in y is explained by the variation in x.

Option a. Is a measure of the amount of variability in one variable that is shared by the other.

(4.2) When interpreting a correlation coefficient, it is important to look at:the sign of the correlation coefficient(to know whether it is + or -_, the magnitude of the correlation coefficient and whether the correlation is significant.

Option b. All of these

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