Question 43
Measures of Central Tendencyx: 2, 4, 6, 8
f: 4, y, 6, 5
If the mean of the above frequency distribution is 5.2, find y
- A.6.0
- B.5.2
- C.5.0
- D.4.0
Show the answer and explanation
Answer: C (5.0)
Explanation
Σfx = 8 + 4y + 36 + 40 = 84 + 4y and Σf = 15 + y. Setting (84 + 4y)/(15 + y) = 5.2 gives 84 + 4y = 78 + 5.2y, so y = 5.