Question

13. The AM of 50 observations was 100. At the time of calculations,
one value was wrongly taken as 100 instead of 180. Find the correct
mean.
​

Answer 1

Step-by-step explanation:

one value take as 100 instead of 180

=> sum of observations should be increased by 80

=> mean is increased by 80/50 =1.6

correct mean = 100+1.6 =101.6

hope this helps