Mike plots the line-of-best fit as shown.
What is the correlation coefficient for the relationship between the variables, and does it suggest a strong correlation?
Responses
The correlation coefficient is 0.989, which suggests a strong correlation.
The correlation coefficient is 0.989, which suggests a strong correlation.
The correlation coefficient is 0.994, which suggests a strong correlation.
The correlation coefficient is 0.994, which suggests a strong correlation.
The correlation coefficient is 0.989, which suggests a weak correlation.
The correlation coefficient is 0.989, which suggests a weak correlation.
The correlation coefficient is 0.994, which suggests a weak correlation.
1 answer
The correlation coefficient is generally a value between -1 and 1, where values closer to 1 or -1 indicate a stronger correlation, and values closer to 0 indicate a weaker correlation. In this case, both given correlation coefficients (0.989 and 0.994) are close to 1, suggesting a strong positive correlation between the heights and arm spans of Mike's classmates.
Thus, the correct response is:
The correlation coefficient is 0.994, which suggests a strong correlation.
