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Which of the following statements concerning the linear correlation coefficient are true? I: If the linear...

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 less than one.

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 -0.82.  

Math   Statistics-And-Probability   
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