2025 · Q90
Consider the following for the next five (05) items that follow: The frequency distribution of 205 observations on X is given below: X: 3, 5, 6, 7; Frequency: f, f+2, f−3, f+6. What is the mean of the frequency distribution?
Elementary MathematicsStatistics
- A3·29
- B4·29
- C5·29
- D6·29
Explanation
Mean = (sum of f*X)/(sum of f) = (3*50 + 5*52 + 6*47 + 7*56)/205 = (150 + 260 + 282 + 392)/205 = 1084/205, which is approximately 5.29. Hence option (c).