Question

The mean age of a student book club is 14.2 years. A 27-year-old teacher is

invited to join the club. How does the teacher's age affect the mean?

Answer 1

Answer: The teacher's age increases the mean.

Explanation:

14.2 + 27 = 41.2 years

41.2/2 = 20.6 years

20.6 years > 14.2 years