The average of 18 integers is found to be 41. It was detected that by mistake the integer 127 was copied as 341, while calculating the average. Then the correct average is:
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. .
Sum of observations = Average × Number of observations
According to the given question,
Sum of 18 integers = 18 × 41
⇒ 738
The actual sum without mistake = 738 - (341 - 127)
⇒ 738 - 214 = 524
Now, required average = 524/18
⇒ 262/9 =