Question

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 1

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