Answer to Question #171042 in Statistics and Probability for Lyssa

Question

Use the Desmos kept grabbing calculator to generate the least squares regression line and statistics for the data in the table. What is the residual value for X =18

X Y

2 3

4 9

11 12

15 17

18 16

25 22

Answers:

-0.4216

-1.2389

0.4216

2.5784

Answer 1

$$y=mx+b$$

$m=0.7404, b=3.9117$

$$y=0.7404x+3.9117$$

$x=18$

$$y=0.7404(18)+3.9117=17.2389$$

Residual

$$16-17.2389= -1.2389$$

-1.2389