Question

a line of best fit predicts that when x equals 29 y will equal 27.745 but y actually equals 25 what is the best residual in this case

a. -1.255
b. 1.255
c.2.745
d. -2.745

this is a prob and stats question

Answer 1

we know that

the formula in solving residual is shown below:
[Residual value] = [Observed value] - [predicted value]
so
[Observed value]=25
[predicted value]=27.745
[Residual value]=  25 - 27.255----------> -2.745

Residual values = -2.745

the answer is the option D) -2.745