given the following least squares equation in line y10704207
given the following least squares equation in line: y=-107.04+20.705x
a) if an ordered pair from raw data results in (10,95.01) what is the residual?
b) in this case interept the meaning of the residual?
Solution
a)
If x = 10, then as
y^ = -107.04 + 20.705x
y^ = -107.04 + 20.705*(10) = 100.01
Thus, the residual is
Residual = y - y^ = 95.01 - 100.01
residual= -5 [ANSWER, -5]
*************************
B)
The residual here means that the the regression line overestimated the actual value of y by 5 units.
