Linear Regression Models

AP Statistics· difficulty 3/5

Least-squares slope is given by

A
$b = r²$
B
$b = r\cdot(s_x/s_y)$
C
$b = r\cdots_x\cdots_y$
D
$b = r\cdot(s_y/s_x)$
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Explanation

b = r \cdot (SD_y / SD_x) — slope scales with the SD ratio and r.

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