Question

The mean of 40 numbers was found to be 38 later on it was detected that a number 56 was missed as 36 find the correct mean of the given number

Answer 1

Answer:

38.5

Step-by-step explanation:

Mean = (Sum of the values)/(Number of the values)

38 = (Sum)/40

Sum = 38*40 = 1520

However, a number 56 was missed as 36.

The Correct Sum = 1520 - 36 + 56 = 1540

Therefore, The Correct mean = 1540/40 = 38.5