# Question ba8c9

Sep 25, 2017

$4$

#### Explanation:

$y = 2.2 x + 10$ is the equation of the least squares regression line.

$r e s i \mathrm{du} a l = {Y}_{o} b s - {Y}_{p} red$, this is the formula we use to find the residual.

${y}_{o} b s$ means the value of $y$ that you found or observed from the scatter graph.

${Y}_{p} red$ means the value of $y$ that you will find using the equation of the least squares regression line.

The point given is $\left(5 , 25\right)$

$x = 5$

${y}_{o} b s = 25$

(Using equation)Y _ pred = 2.2 ×5+10#
$= 21$

Residual $= 25 - 21$
$= 4$