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Fit the Line
Drag the two white handles to tilt and shift the line. Get it as close as you can to the scatter, then lock it in and see how you stack up against the real least-squares fit.
🌱 Beginner
~2 min
Concept: Linear Regression
Round 1 of 3
Drag the handles at either end of the line. Lower error is better.
📌 How scoring works
Your score is how close your sum of squared errors gets to the mathematically optimal line (the one linear regression would compute exactly). 100% means you found the perfect fit by eye.