The mean of 5 observations is 10. A new observation 10 is added, then mean of 6 observation is:
- 5
- 10
- 15
- None of these
Explanation
The mean of 5 observations is 10.
This means the sum of the 5 observations is:
Now, a new observation (10) is added. The new sum becomes:
The new mean of the 6 observations is:
Number of observations
=660
=10
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اس سوال کو وضاحت کے ساتھ پڑھیں
