The mean of 100 items was found to be 300 If at the time of calculation two items were - Maths - Statistics

Question

The mean of 100 items was found to be 300 If at the time of
calculation two items were wrongly taken as 32 and 12 instead of 23
and 11, find the correct mean Please don't give a link to follow

Lovina Kansal · Accepted Answer

Dear student
We have,Mean of 100 items=300sum of 100 items100=300Sum of 100 items=30000Now,2 items 32 and 12 were taken wrongly instead of 23 and 11So, correct sum of 100 items=30000-32+12+(23+11)=29990Now, correct mean=Correct sum100=29990100=299
9
Regards

The mean of 100 items was found to be 300. If at the time of calculation two items were wrongly taken as 32 and 12 instead of 23 and 11, find the correct mean.Please don't give a link to follow