Problem:
The accompanying data were compiled by the superintendent of schools in a large metropolitan area. The table shows the average SAT verbal scores of high school seniors during the 5 years since the district implemented its "back-to-basics" program.
Year x 1 2 3 4 5
Average Score y 430 432 430 426 426
Determine the equation of the least-squares line for these data.
a. y = -8/5x + 433
b. y = -7/5x + 428
c. y = 8/5x + 428
d. y = 8/5x + 433
e. y = -7/5x + 433
Additional Information:
This question is from Mathematics and it is about finding least squares equation for the data.