It is good procedure to calculate a correlation coefficient when a least-squares line has been derived.

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Calculating the correlation coefficient is useful when a least-squares line has been derived as it provides information about the strength and direction of the linear relationship between the two variables being analyzed. The correlation coefficient measures the extent to which the variables are correlated, ranging from -1 (perfect negative correlation) to +1 (perfect positive correlation), with 0 indicating no correlation.

It Is Good Procedure to Calculate a Correlation Coefficient When