Which of the following are true about the correlation coefficient r? Select one or more:
If the correlation coefficient is + 1, then the slope of the regression line is also + 1.
The correlation coefficient is always greater than 0.
If the correlation coefficient is close to 0, that means there is a strong linear relationship between the two variables.
The correlation coefficient will change if we change the units of measure.
The correlation coefficient is always between - 1 and + 1.
If the correlation coefficient is positive, the slope of the regression line will also be positive.
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