For regression purposes, it is customary to assign Y to the variable
? Question 1 10 out of 10 points
For regression purposes, it is customary to assign Y to the variable we are predicting from.
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? Question 2 0 out of 10 points
If the regression line is parallel to the X axis then the slope of the regression line equals 0.
? Question 3 10 out of 10 points
An imperfect relationship generally yields exact prediction.
? Question 4 10 out of 10 points
Using a second predictor variable always increases the accuracy of prediction.
? Question 5 10 out of 10 points
If the correlation between two variables is 1.00, the standard error of estimate equals 0.
? Question 6 10 out of 10 points
In general one is less confident in predictions of Y when the value of X used for the prediction is outside the range of the original data used to construct the regression line.
? Question 7 10 out of 10 points
If we minimize ? (Y?Y’)2, we will minimize the total error of prediction.
? Question 8 10 out of 10 points
The total error in prediction equals ? (Y ? Y’).
? Question 9 10 out of 10 points
? Question 10 10 out of 10 points
If sX = sY then r = bY.
