Question

Mean of 10 observation was found to be 51 later on it was found that the observation 62 was misread as 72 find the correct mean​

Answer 1

Step-by-step explanation:

Mean =sum of observation ÷no. Of observation

According to first statement

Sum=280

As instead of 14,24 was misread,so we have to subtract 24 from 280

280-24=256

Then,we add correct observation i.e 14 in 256

256+14=270

Now , correct mean=270÷10=27