mean mark obtained by 50 student as estimated to be 60 later on it value was read as 84 in instead of 48 find the current mean
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no of students= 50
wrong mean = 60
wrong value = 84
correct mean = 50x 60 - 84+48/ 50
= 59.28
wrong mean = 60
wrong value = 84
correct mean = 50x 60 - 84+48/ 50
= 59.28
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