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Correlation

AP Statistics· difficulty 3/5

r² = 0.81 means

  • A

    81% of x values are used

  • B

    81% of variation in y is explained by linear regression on x

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  • C

    81% chance line is correct

  • D

    81% of points fall on the line

Explanation

r² = proportion of variance in y explained by the linear regression on x.

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