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Residual point
A residual is defined in the context of some "expected" value. There is no information in the question regarding expected values.
The point lies one unit above the regression line.
The point lies 1 unit below the regression line.
Ah, the stochastic error term and the residual are like happy little clouds in our painting. The stochastic error term represents the random variability in our data that we can't explain, while the residual is the difference between the observed value and the predicted value by our model. Both are important in understanding and improving our models, just like adding details to our beautiful landscape.