Question 47
Measures of Central TendencyThe table shows the ages of students in a class.
Age (Years): 13, 14, 15, 16, 17
Number of Students: 3, 14, 13, 8, 3
Find, correct to the nearest whole number, the average age of the students.
- A.13
- B.14
- C.15
- D.16
Show the answer and explanation
Answer: C (15)
Explanation
Σfx = 39 + 196 + 195 + 128 + 51 = 609 and Σf = 41, so the mean is 609/41 ≈ 14.9 ≈ 15.