Correct Answer - Option 2 : 27
Given:
The average of eight observations is 25.
One of the observation 11 is removed
Formula used:
Average = (Sum of observation/Number of observation)
Calculation:
According to the formula, we have
(Sum of 8 observation/8) = 25
⇒ Sum of 8 observation = 25 × 8
⇒ Sum of 8 observation = 200
Now, 11 is removed from the 8 observation
So, the sum of 7 observation = 200 - 11
⇒ 189
So, the average of 7 observation = 189/7
⇒ 27
∴ The average of the remaining observation is 27.