Which of the following statements concerning the linear correlation coefficient are true?
I: If the linear correlation coefficient for two variables is zero, then there is no relationship between the variables.
II: If the slope of the regression line is negative, then the linear correlation coefficient is negative.
III: The value of the linear correlation coefficient always lies
between −1 and 1.
IV: A linear correlation coefficient of 0.62 suggests a stronger linear relationship than a linear correlation coefficient of
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minus−0.82.
A. II and III
B. I and II
C. III and IV
D. I and IV
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