Question

The mean of the hundred numbers is 50 but we later on find that the one number is written by 50 is space of the 150 find the correct mean

Answer 1

Step-by-step explanation:

∴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=

100

5100

=51