Question

mean of 100 numbers was found to be 50. but later on, it was obsessed that one of the number 150 was wrongly taken as 50. the correct mean is.​

Answer 1

The correct answer is 100

Answer 2

Explanation:

Mean of 100 observation =50

∴Total of 100 observation=100×50=5000

If one of the observation 50 is replaced by 150 than total of new observation is=5000−50+150=5100

Hence the mean of new 100 observation=

5100/100= 51