Linear Regression Models

AP Statistics· difficulty 2/5

The y-intercept a in ŷ = a + bx is

A
$Always 0$
B
$Slope of line$
C
$Mean of x$
D
$Predicted y when x = 0$
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Explanation

Intercept = predicted y at x = 0 (interpret cautiously if x = 0 is far from data).

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