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The mean of marks scored by 50 student was founds to be 39. later on it was dis cover that a scored of 43 was misread as 23. find the correct mean
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The mean of marks scored by 50 student was founds to be 39. later on i...
Correct mean = ( 39×50 - 23 + 43 ) ÷ 50

= ( 1950-23+43)÷50 = 1930÷50 = 38.6

hope this was helpful
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The mean of marks scored by 50 student was founds to be 39. later on it was dis cover that a scored of 43 was misread as 23. find the correct mean Related: Examples(NCERT):Mean, median and mode, Data Handling, Class 7 Math
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