What is a special feature of the least-squares regression line?
A) It passes through all observations in a scatterplot.
B) It establishes causal relationships between variables.
C) It detects both linear and curved relationships.
D) It comes as close as possible to all conditional means of Y.

Question

Quizplus · Accepted Answer

The least-squares regression line minimizes the sum of the squared differences between observed values and predicted values, effectively coming as close as possible to the conditional means of Y for given X values.

What Is a Special Feature of the Least-Squares Regression Line