Use the data to report a bivariate data analysis. The correlation coefficient is r = 1. Which of the following statements must be true?
Since the correlation coefficient is r = 1, this implies a perfect positive linear relationship between the two variables. Therefore, the following statements must be true:
1. The two variables have a strong positive linear relationship.
2. As one variable increases, the other variable also increases in a linear fashion.
3. The data points are clustered closely around a straight line on a scatter plot.
4. The correlation between the two variables is perfect, indicating a strong relationship.