The Standard Error of Estimate $$S _ { \varepsilon }$$

Multiple Choice

The standard error of estimate, $$S _ { \varepsilon }$$ , is a measure of:

A) variation of y around the regression line.
B) variation of x around the regression line.
C) variation of y around the mean $$\bar { y }$$ .
D) variation of x around the mean $$\bar { x }$$ .