when number x is added to the following set of number 5,7,8,12,6,10 and 11 the mean is . calculate the value of x.
Meghith:
without mea hw cn we find it
oh sorry
yaa n thts why i took it as 9..
thanks nehaa
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Mean = Sum of Observation / No. of Observation
9 = 5 + 7 + 8 + 12 + 6 + 10 + 9 + 11 + x / 9
81 = 68 + x
x = 81 - 68
x = 13
9 = 5 + 7 + 8 + 12 + 6 + 10 + 9 + 11 + x / 9
81 = 68 + x
x = 81 - 68
x = 13
this is the answer
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