Properly speaking, we should limit our predictions to the range
Question 1 0 out of 10 points
Properly speaking, we should limit our predictions to the range of the base data.
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? Question 2 10 out of 10 points
If the standard deviations of the X and Y distributions are equal, then r = bY.
? Question 3 0 out of 10 points
The regression line will always go through the point .
? Question 4 10 out of 10 points
For regression purposes, it is customary to assign Y to the predicted variable.
? Question 5 0 out of 10 points
If the relationship between two variables is perfect the standard error of estimate equals 0.
? Question 6 10 out of 10 points
If X and Y are plotted as standard (z) scores, then r equals the slope of the resulting regression line.
? Question 7 0 out of 10 points
When there are two predictor variables, R2 is the simple sum of r2 for the relationship of the first predictor variable and Y and r2 for the relationship of the second predictor variable and Y.
? Question 8 10 out of 10 points
When the relationship is perfect, the regression of Y on X is the same as the regression of X on Y.
? Question 9 0 out of 10 points
If sY = sX, then r = bY.
? Question 10 10 out of 10 points
An imperfect relationship generally yields exact prediction.
