Which of the following would not be a correct interpretation of r = -.30? 1. Variables are inversely related. 2. Coefficient of determination is % of variation between variables is linear. 4. There is a weak relationship between the variables. 5. All above are correct.
Equation for LSRL is y-hat = x. What is the residual for the point (4,7)?
Imagine two boys on a seesaw moving up and down. The r value of their heights off the ground would be:
If the correlation between X and Y is 0.94, which is true? 1. X causes Y 2. Y causes X 3. Low scores on X are associated with high scores on Y 4. Low scores on X are associated with low scores on Y.
A residual plot for linear data looks linear. 1. True 2. False
Test A results correlate with results on the Nat’l Merit Scholarship exam. Because of the negative sign, this relationship is considered to be weak. 1. True 2. False