Question 35
Measures of Central TendencyThe table below shows the frequency distribution of a number of chairs in each of 40 rooms of various houses.
No. of chairs: 1, 2, 3, 4, 5, 6, 7
Frequency: 2, 7, 5, 4, 9, 7, 6
Find the mean of the distribution.
- A.3.5
- B.4.0
- C.4.4
- D.5.0
- E.5.7
Show the answer and explanation
Answer: C (4.4)
Explanation
Σfx = 2 + 14 + 15 + 16 + 45 + 42 + 42 = 176; mean = 176 ÷ 40 = 4.4.