Which statement is CORRECT? The correlation r is the slope of the least-squares
ID: 3292472 • Letter: W
Question
Which statement is CORRECT?
The correlation r is the slope of the least-squares regression line.
The square of the correlation is the slope of the least-squares regression line.
The square of the correlation is the proportion of the data lying on the least-squares regression line.
The mean of the residuals from least-squares regression is 0.
A.The correlation r is the slope of the least-squares regression line.
B.The square of the correlation is the slope of the least-squares regression line.
C.The square of the correlation is the proportion of the data lying on the least-squares regression line.
D.The mean of the residuals from least-squares regression is 0.
Explanation / Answer
correct option is D.
Residuals are the vertical distances between the data points and the corresponding predicted values. For a least squares regression, the residuals always havemean zero
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