The formula for a regression line is Y = a + bx. If your solution is Y = 15 + 4x and the value of x is 5, then the value of a is
A) 4.
B) 5.
C) 15.
D) 35.

Name: The formula for a regression line is Y = a + bx. If your solution is Y = 15 + 4x and the value of x is 5, then the value of a is A) 4. B) 5. C) 15. D) 35.
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Quizplus · Accepted Answer

The value of $a$ in the regression line equation $Y = a + bx$ represents the y-intercept, which is the value of $Y$ when $x = 0$. In the given equation $Y = 15 + 4x$, $a = 15$.

The Formula for a Regression Line Is Y = a