Use the given information to find the coefficient of determination. a regression equation is obtained for a collection of paired data. it is found that the total variation is 20.711, the explained variation is 18.592, and the unexplained variation is 2.119.

a) 1.114.
b) 0.102.
c) ) 0.898.
d) 0.114.

Option c) 0.898

Step-by-step explanation:

Given :

Total variation = 20.711

Explained variation = 18.592

unexplained variation = 2.119

we know that coefficient of determination  r² =

                                                                       =

                                                                       = 0.897687 ≈ 0.898

Option c, 0.898 is the answer.

the graph in the attached figure

step-by-step explanation:

we have

using a graphing tool

the graph in the attached figure

the roots are ( x-intercepts) x=-0.5,x=1,x=3

the y-intercept is the point (0,3)