PRC-2 · Chapter 10 · Question 41 of 60
A regression line of Y on X must always mathematically pass through which specific coordinate point on a scatter diagram?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: C) The point representing the mean of X and the mean of Y (x-bar, y-bar).
Explanation
A foundational property of the least squares regression method is that the calculated line of best fit must strictly intersect the centroid of the dataset, which is the intersection of the variables' means.
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