SOLUTION: Please check if my answer is right for this. Find the least squares regression line of the data below using the regression feature of a graphing utility. Then, find the average

Algebra ->  Probability-and-statistics -> SOLUTION: Please check if my answer is right for this. Find the least squares regression line of the data below using the regression feature of a graphing utility. Then, find the average      Log On


   

Question 1052550: Please check if my answer is right for this.
Find the least squares regression line of the data below using the regression feature of a graphing utility. Then, find the average lengths of cellular calls for the year 2013.
Number Chart: https://s15.postimg.org/3la5pgvcr/graph_gain.png
A.) +242.+88+ minutes
B.) +4.08+ minutes -- my answer
C.) +3.48+ minutes
D.) +3.97+ minutes
Found 2 solutions by Fombitz, rothauserc:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The regression line is,
y=0.122x-241.461
Typically a regression line is used to interpolate not extrapolate.
Given that caveat,
y=0.122%282013%29-241.461
y=4.125
I guess 4.08 is the closest answer.

Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
The least square regression line is
:
y = 0.122x -241.461
:
For the year 2013, y = 4.125
:
****************
Select answer B)
****************
: