Which of the following is NOT true When all the points fall

Which of the following is NOT true? When all the points fall on the regression line, the value of the correlation coefficient (r) would equal zero. Before a regression analysis is performed, one should draw a and test the significance of the correlation coefficient (r). In the equation of the regression line, the symbol a is used for the y intercept. In the equation of the regression line, the symbol b is used for the slope.

Solution

OPTION A: When all the points fall on the regression line, the value of the correlation coefficient (r) would equal 0. [ANSWER]

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This is false. When all points fall in the line, then r = 1 (positive slope) or r = -1 (negative slope).