Question

the mean of 150 items was found to be 60.Later on,It was discovered that the values of two items were misread as 52 and 8 instead of 152 and 88 respectively. Find the correct mean ​

Answer 1

Answer:

Mean=sum the observations/number of observations

60=sum of observation/150

sum of observation=60*150=9000

New mean=9000+100+80/150

=9180/150=61.2

Hope it helps you