Question

what does it mean to say that a data point has a residual of 0?
a. the point lies directly on the regression line.
b. the point lies above the regression line.
c. the point falls at the origin.
d. the predicted value for that point is 0.

Explanation:

The residual is the difference between the observed value and the predicted value (from the regression line). When the residual is 0, it means the observed value equals the predicted value, so the data - point lies directly on the regression line.

Answer:

A. The point lies directly on the regression line.