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QUESTION 18 Which of the following statements is true? The correlation coefficient is -1 if there is a perfect positive correlation between two variables The

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QUESTION 18 Which of the following statements is true? The correlation coefficient is -1 if there is a perfect positive correlation between two variables The correlation coefficient is 0 if there is a perfect positive correlation between two variables The correlation coefficient is 0.5 if there is a perfect positive correlation between two variables. The correlation coefficient is 1 if there is a perfect positive correlation between two variables

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