Spray a Point Cloud

About this app

Spray, erase or place points one by one: quadrants show the covariance as signed rectangles, plus r, Spearman, R², two regression lines and examples where r misleads (U shape, outlier, two groups).

Subject: Probability & statistics

More from Probability & statistics

• Curve-fitting playground
• Galton board
• Covariance & Regression
• Covariance & regression 2.0
• Coin flips: law of large numbers
• Regression & R²
• Monty Hall problem

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