Question 34
Measures of Central TendencyThe mean height of three groups consisting of 20, 16 and 14 students are 1.67 m, 1.50 m and 1.40 m respectively. Find the mean height of all the students.
- A.1.54 m
- B.1.53 m
- C.1.55 m
- D.1.52 m
Show the answer and explanation
Answer: A (1.54 m)
Explanation
Total height = 33.4 + 24 + 19.6 = 77 m for 50 students, so the mean is 1.54 m.