What is the value of correlation coefficient if the coeffici

What is the value of correlation coefficient if the coefficient of determination is 0.5. The regression line has a negative slope. 0.707 -0.707 -0.25 0.25

Solution

Correlation coefficient = (coefficient of determination)² = r x r = 0.5 x0.5 =0.25.

Since the slope of the regression line is negative, hence correlation coefficient is -0.25. Option(c).