Question

the ages of the members of four teams are summarized below. answer the questions about them. team a: the mean age is 43 and the range of ages is 9. team b: the mean age is 45 and the range of ages is 10. team c: the mean age is 37 and the range of ages is 17. team d: the mean age is 41 and the range of ages is 15. (a) based on the information above, which team’s ages have the most variability? team a team b team c team d (b) based on the information above, which team has the oldest members on average? team a team b team c team d

Explanation:

Step1: Analyze variability

Variability is measured by range here. Compare ranges: Team A has range 9, Team B has range 10, Team C has range 10, Team D has range 15. Larger range means more variability.

Step2: Analyze average age

Average age is mean age. Compare means: Team A mean is 43, Team B mean is 45, Team C mean is 37, Team D mean is 41. Larger mean means older on average.

Answer:

(a) D. Team D
(b) B. Team B