The mean of 5 observations is 10. A new observation 10 is added, then mean of 6 observation is:
Answer: 10
Explanation
The mean of 5 observations is 10.
This means the sum of the 5 observations is:
Sum of 5 observations=Mean×Number of observations=10×5=50
Now, a new observation (10) is added. The new sum becomes:
New sum=50+10=60
The new mean of the 6 observations is:
New mean=New sum/Number of observations
=660
=10
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