Question 28
Measures of Central TendencyThe table shows the ages (in years) of twenty children chosen at random from a community.
Age (years): 1, 2, 3, 4, 5
Number of children: 2, 3, 5, 6, 4
What is the mean age?
- A.4.46 years
- B.3.35 years
- C.3.30 years
- D.3.00 years
Show the answer and explanation
Answer: B (3.35 years)
Explanation
Σfx = 2 + 6 + 15 + 24 + 20 = 67 and Σf = 20, so the mean = 67/20 = 3.35 years.