Question

the ages of the members of four teams are summarized below. answer the questions about them. team a: the mean age is 33 and the range of ages is 25. team b: the mean age is 30 and the range of ages is 31. team c: the mean age is 38 and the range of ages is 30. team d: the mean age is 34 and the range of ages is 34. (a) based on the information above, which team has the oldest members on average? team a team b team c team d (b) based on the information above, which teams ages have the least variability? team a team b team c team d

Explanation:

Step1: Determine average - oldest members

We are given the mean ages of each team. The mean represents the average age. Team A has a mean of 33, Team B has a mean of 30, Team C has a mean of 38, and Team D has a mean of 34. The higher the mean, the older the average age of members. Since 38>34>33>30, Team C has the oldest members on average.

Step2: Determine least variability

The range is a measure of variability. A smaller range indicates less variability in the data set. Team A has a range of 25, Team B has a range of 31, Team C has a range of 30, and Team D has a range of 34. Since 25<30<31<34, Team A has the least variability in ages.

Answer:

(a) Team C
(b) Team A