Question

18 children had an average score of 30 in a test. However, when calculating the average, instead of 43, a score of 34 was taken for one child. What will be the corrected average score?

• A. 30.5
• B. 31
• C. 31.5
• D. 32

Answer 1

Answer:

A. 30.5

Difference in marks = 9 marks If the average for one child increases by 0.5 marks, it will result in a total of 9 marks. Adding this to the original average will yield the new average score. 30 + 0.05 = 30.5