In the United States, the original full retirement age was 65. The retirement age has since been pushed to 66 and will soon move to 67, as life expectancies go up. The Social Security Administration periodically conducts studies regarding retirement age. One such study focused on whether or not retiring early lowers a person's life expectancy. The study found a weak positive correlation between retirement age and life expectancy. If data from the study were graphed in a scatterplot, which of the following statements would be true?
A. The slope of the line of best fit would be a large positive number.
B. The slope of the line of best fit would be a negative number close to 0.
C. The data points would follow, but not closely, an increasing line of best fit.
D. The data points would be closely gathered around an increasing line of best fit.
Answer:C
In the United States, the original full retirement age was 65. The retirement age has since been pushed to 66 and will soon move to 67, as life expectancies go up. The Social Security Administration periodically conducts studies regarding retirement age. One such study focused on whether or not retiring early lowers a person's life expectancy. The study found a weak positive correlation between retirement age and life expectancy. If data from the study were graphed in a scatterplot, which of the following statements would be true?
A. The slope of the line of best fit would be a large positive number. B. The slope of the line of best fit would be a negative number close to 0. C. The data points would follow, but not closely, an increasing line of best fit. D. The data points would be closely gathered around an increasing line of best fit.
Explanation: C