general math MCQ #2104

The mean of 50 observations was 36. It was found later that an observation 48 was wrongly taken as 23. The corrected new mean is___________?

general math MCQ #2104

  1. Question 1

    Q1. The mean of 50 observations was 36. It was found later that an observation 48 was wrongly taken as 23. The corrected new mean is___________?

    • A) 35.2
    • B) 36.1
    • C) 36.5
    • D) 39.1

    Answer: 36.5

    Explanation: Corrected sum = 50 × 36 − 23 + 48 = 1825; corrected mean = 1825 ÷ 50 = 36.5.