If the correlation coefficient between two variables is .90, what percent of the variance is explained by this correlation

 81% of the variance in dependent variable is explained by this correlation .

Step-by-step explanation:

For X = Independent variable and Y=dependent variable,

If r= correlation coefficient , then we say  of the variance in Y is explained by Variable X.

Given: r= 0.90

So, 81% of the variance in dependent variable is explained by this correlation .

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the one that has a slope of 1/2 and is positive.

step-by-step explanation: 2 buckets 1 trip ; 4 buckets 2 trips and so on.