Math  /  Word Problems

QuestionWhat is the relationship between correlation rr and slope bb of the least squares line for the same data set?

Studdy Solution
The correlation coefficient rr and the slope bb of the least squares line always have the same sign. This is because the sign of bb is determined by the sign of rr. If the correlation is positive, the slope is positive, indicating that as one variable increases, the other also increases. If the correlation is negative, the slope is negative, indicating that as one variable increases, the other decreases.
Therefore, the correct answer is. rr and bb have the same sign (+ or - ).

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