APFIVE Slope of the Regression of X on Y
Which of the following formulas gives the slope, $$b$$, of the least-squares regression line for predicting $$x$$ from $$y$$?
A
$$b = r * \frac{s_x}{s_y}$$
B
$$b = \frac{s_x}{s_y}$$
C
$$b = s_x - s_y$$
D
$$b = r * \frac{s_y}{s_x}$$
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