Answer choice C
118.10/66.35=1.779 or 1.78
1.78x100=178
D : because this make so much since duh . && watch yuu get it right !
Given:
The table of values.
To find:
The least-squares regression line for the data set in the table by using the desmos graphing calculator.
Solution:
The general form of least-squares regression line is:
...(i)
Where, m is the slope and b is the y-intercept.
By using the desmos graphing calculator, we get
![m\approx 2.55,b\approx -6.435](https://tex.z-dn.net/?f=m%5Capprox%202.55%2Cb%5Capprox%20-6.435)
Substitute these values in (i).
![\hat{y}=(2.55)x+(-6.435)](https://tex.z-dn.net/?f=%5Chat%7By%7D%3D%282.55%29x%2B%28-6.435%29)
![\hat{y}=2.55x-6.435](https://tex.z-dn.net/?f=%5Chat%7By%7D%3D2.55x-6.435)
Therefore, the correct option is A.
-6 and -6 because -6 + -6 = -12 , you could also have -8 and -4 because -8 + -4 = -12, or you could also have -10 and -2 because -10 + -2 = -12