It can be shown that the sum of the residuals from a least squares line always equals zero.
a. Does it follow that the mean of the residuals from a least squares line must always equal zero? Explain briefly.
b. Does it follow that the median of the residuals from a least squares line must always equal zero? Explain briefly.

Question

Quizplus · Accepted Answer

The Answer of It can be shown that the sum of the residuals from a least squares line always equals zero.
a. Does it follow that the mean of the residuals from a least squares line must always equal zero? Explain briefly.
b. Does it follow that the median of the residuals from a least squares line must always equal zero? Explain briefly.

It Can Be Shown That the Sum of the Residuals