The marks obtained by 10 students in a class -test were as follows: 38,41,36,31,45,38,27,32,29,39 .Find the mean of their marks,when the marks of each students are increased by 2. ?
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mean of their marks
(38+41+36+31+45+38+27+32+29+39 )/103
= 35.6
when marks of every student is increased by 2 then the mean of their numbers is also increased by 2
so now the mean = 35.6 + 2 = 37.6
(38+41+36+31+45+38+27+32+29+39 )/103
= 35.6
when marks of every student is increased by 2 then the mean of their numbers is also increased by 2
so now the mean = 35.6 + 2 = 37.6
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