Question

the mean of 100 items was found to be 64,Lateron it was discovered that two items were misread as 26 and 9 instead of 36 and 90 respectively find the correct mean

Answer 1

Average=64
so sum=64*100

difference =>
36-26=10
90-9=81



average=(6400+10+81)/100
=6491/100
=64.91

Answer 2

gjmfihftijcdujbffkjcy