2023 · Q84
Consider the following distribution for the next two (02) items that follow: Class intervals 40-50, 50-60, 60-70, 70-80 have frequencies 4, 3, 1, 2 respectively. What is the mean deviation about the median of the distribution?
Elementary MathematicsStatistics
- A531/3
- B60
- C160
- D180
Explanation
The median is 50 + ((5 − 4)/3)·10 ≈ 53.33, and the mean deviation about the median is (33.33 + 5 + 11.67 + 43.33)/10 ≈ 9.33. This matches none of the given options, so the distribution as transcribed admits no correct answer. Key disputed: verify against the official UPSC key.