Correlation

AP Statistics· difficulty 3/5

Two regressions yield slopes b1 = 2 and b2 = 5.

Which conclusion is justified?

A
$The second regression has stronger correlation$
B
$Slopes equal correlations$
C
$The first has stronger correlation$
D
$Cannot conclude which has stronger correlation; slope and r differ$
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Explanation

Slope and r are different: r is unitless and bounded; slope has units. Strength is measured by |r|, not |b|.

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