The mean marks scored by
40 students were found to be 60. Later it was observed that 48 was missed as 84.Find the correct mean
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Answer:
calcυlaтe мean oғ 40 ѕтυdenт =60
calcυlaтe ѕυм oғ тнeѕe ѕтυdenт мarĸѕ =40×60=2400
correcт ѕυм oғ тнeѕe ѕcore =2400-84+48
=2448-84
=2364
ѕo, тнe correcт мean =2364/40
=59.1
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