the mean of 5 onservation is 10 if each observation of the data is increased by 5 find the new mean
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The new mean is :
The mean of 5 observation is 10 if each observation of the data is increased by 5.
• Mean, M = x1 + x2 + x3 + x4 + x5 / 5 = 10
• When each data is increased by 5 then new mean will be
• M' = x1 + 5 + x2 + 5 + x3 + 5 + x4 + 5
+ x5 + 5 / 5
= x1 + x2 + x3 + x4 + x5 + 25 / 5
= (x1 + x2 + x3 + x4 + x5 / 5) +
25/5
= M + 5
• Hence, New mean value will be M + 5
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