mean of 35 student is 15 a chance to improve student is that 6,3,
5 and then improvement is 10,12,7 what is the new mean
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mean =sum of all students/no. of students
15=sum/35
therefore, sum=525
now ....
A to Q
(525+10+12+7-6-3-5)/35=NEW MEAN
540/35=15.43
15=sum/35
therefore, sum=525
now ....
A to Q
(525+10+12+7-6-3-5)/35=NEW MEAN
540/35=15.43
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