The average marks of 100 students are given to be 40.It was found later that marks of one student were 53 which were misread as 83.The corrected mean marks are
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Answer:
39.7
Step-by-step explanation:
initially, average= 40
total marks= 40×100= 4000
after correction,
total marks=4000-83+53
=3970
corrected mean= 3970/100
= 39.7
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