Use the value of the linear correlation coefficient to calculate the coefficient

Question

Use the value of the linear correlation coefficient to calculate the coefficient of determination. What does this tell you about the explained variation of the data about the regression line? About the unexplained variation? r0.392 Calculate the coefficient of determination Round to three decimal places as needed.) What does this tell you about the explained variation of the data about the regression line? % of the variation can be explained by the regression line (Round to one decimal place as needed.) About the unexplained variation? % of the variation is unexplained and is due to other factors or to sampling error

Explanation / Answer

The coefficient of determination is square of the coefficient of correlation i.e it is (-0.392)^2=0.153664

this means that 15.4% variation can be explained and 1-0.1536 or 84.6% variation cannot be explained

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