Increased physical activity has been linked to a lower incidence rate of diabetes. The scatterplot above shows the relationship between the percent of people in a certain country whose daily activity qualifies them as "inactive" and the incidence rate of diabetes in that country. The line of best fit for the data is also shown. Which of the following best represents the meaning of the y-intercept of the line of best fit in the context of this question?
A. The predicted incidence rate of diabetes when the entire country is considered active
B. The predicted incidence rate of diabetes when the entire country is considered inactive
C. The predicted percent of people who will be active when the incidence rate of diabetes is 0%
D. The predicted percent of people who will be inactive when the incidence rate of diabetes is 0%
Answer:A
Increased physical activity has been linked to a lower incidence rate of diabetes. The scatterplot above shows the relationship between the percent of people in a certain country whose daily activity qualifies them as "inactive" and the incidence rate of diabetes in that country. The line of best fit for the data is also shown. Which of the following best represents the meaning of the y-intercept of the line of best fit in the context of this question?
A. The predicted incidence rate of diabetes when the entire country is considered active B. The predicted incidence rate of diabetes when the entire country is considered inactive C. The predicted percent of people who will be active when the incidence rate of diabetes is 0% D. The predicted percent of people who will be inactive when the incidence rate of diabetes is 0%
Explanation: A