the mean marks of 100 students is 40. Later on it was discovered that score of 53 was misreed as 83.find correct mean
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100 students mean marks =40
error = 53 -83 = -30
-30/100 = - 0.3
40 - .3 =39.7 marks correct
error = 53 -83 = -30
-30/100 = - 0.3
40 - .3 =39.7 marks correct
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