The mean of 25 observations is 9.If each observation is increased by 4, then find the new
mean.
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0
Answer:
The new mean is also increased by 4.
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1
Answer:
Original Mean= 9
No. of obv= 25
Sum of original obv= 25 x 9= 225
If each observation is increased by 4 then the new sum= 225 + 4 x 25= 225+ 100= 325
New mean= Sum of obv/ No. of obv
= 325/25= 13
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