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10 cards from this deck
r2r^2r2
Proportion of variation explained in one variable by another
000 to 111 or 0%0\%0% to 100%100\%100%
Yes, even if rrr is negative
r=1r = 1r=1 or r=−1r = -1r=−1
r≈0r \approx 0r≈0
64%64\%64% of weight variation explained by height
Take square root; check scatterplot for sign
Excellent predictor; most variation explained
64%64\%64%
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