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# oints of a scatter diagram lie on the least squares regression line, then the coefficient of determination for these variables based on this data is ?...

If all the points of a scatter diagram lie on the least squares regression line, then the coefficient of determination for these variables based on this data is ?a. 0 b. 1 c. either 1 or -1, depending upon whether the relationship is positive or negative d. could be any value between -1 and 1