2025 · Q86
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 value of f?
Elementary MathematicsStatistics
- A50
- B60
- C70
- D80
Explanation
Adding the four class frequencies: f + (f+2) + (f-3) + (f+6) = 4f + 5 = 205. So 4f = 200 and f = 50. The frequencies are therefore 50, 52, 47 and 56. Hence option (a).