The mean of 7 observations is 32. If one observation 48 is added to this then the new mean is
The mean of 7 observations is 32. If one observation 48 is added to this then the new mean is
A) 36
B) 32
C) 34
D) 38
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2 Answers
Let sum of 7 observations = x
Therefore mean = x/7
i.e. x = 32×7 = 224
When 48 is added, new sum = x + 48 = (224+48) = 272
New mean = 272/8
New mean = 34
(C) 34
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