1. Satisfying the assumption of homoscedasticity allows you to a. Interpret the standard error of estimate b. Calculate multiple R Calculate a standardized regression coefficient Decide who has been naughty or nice 2. The lowest degree of correlation shown below is a. 0.75 b. -0.33 C. -0.25 d. 0.15 3. When a correlation exists, lowering the range of either of the variables will a. raise the correlation b. lower the correlation C. not change the correlation produce a causal relationship 4. The regression equation most often used in psychology minimizes a. [ ( Y - Y') b. E ( Y - Y') 2 C. E ( Y - X)2 d. all of the above 5. The assumption of homoscedasticity is that a. the range of the Y scores is the same as the X scores b. the X and Y distributions have the same mean values C . the variability of Y doesn't change over the X scores d. the variability of the X and Y distributions is the same 6. The lower the standard error of estimate is: a. the more accurate the prediction is likely to be b. the less accurate is the prediction is likely to be C. the less confidence we have in the accuracy of the prediction d. the more confidence we have in the accuracy of the prediction e. A and D 7. Explain the difference between a partial and a part correlation using an example for each one. (6 points)