App Logo

No.1 PSC Learning App

1M+ Downloads
The mean of 36 numbers was found as 42. Later on, it was determined that a number 47 was misread as 41. Find the correct mean of the given numbers (rounded off to two decimal places).

A43.74

B42.17

C42.83

D43.62

Answer:

B. 42.17

Read Explanation:

Correct mean = (sum of 36 numbers + 6) / 36 = 42.17 (after correcting the misread value).


Related Questions:

The average of first 102 even numbers is
Out of three numbers, the first is twice the second and is half of the third. If the average of the three numbers is 63, then difference of first and third numbers is:
The average of eight numbers is 20. The average of five of these numbers is 20. The average of the remaining three numbers is
There are four different numbers. The average of the first three numbers is three times the fourth number, and the average of all the four numbers is 55. What is the sum of the first three numbers?
The average weight of 13 students and their teacher is 24.5 kg. If the weight of the teacher is 31 kg, then what is the average weight of the 13 students?