Correlation vs. Slope: What's the Difference?
Move the knob: up/down changes slope, left/right changes correlation strength.
← Strength (weak → strong) →
← Slope (negative → positive) →
Display Options
Exploration
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Create strong positive correlation with gentle slope
Move right (strong r) and keep the knob in the upper-middle area for a gentle positive slope.
Flip the r and slope cards to check your values →
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Create near-zero correlation with non-zero slope3
Explore how negative slopes can have strong correlations4
Enable z-scores and observe that r ≈ slope