Mean of 9 observation was found to 35 later on, it was detected that an observation 81 was missed as 18 find the correct mean of the observation .
Answers
Answered by
13
Hi Friend !!!!
Here is ur answer !!!
Sum of 9 observations = 35×9
= 315
A number missed 81 as 18
315-18+81 = 378
So the correct mean = 378/9
= 42
Hope it helps u : )
Here is ur answer !!!
Sum of 9 observations = 35×9
= 315
A number missed 81 as 18
315-18+81 = 378
So the correct mean = 378/9
= 42
Hope it helps u : )
Answered by
4
Heya !!!
Mean of 9 observations = 35
Therefore,
Sum of these observations = ( 35 × 9) = 315
Correct sum of these obsetvations =
=> [ 315 - ( Wrong observation ) + ( Right observation)
=> [ 315 - (18) + 81 ]
=> 315 - 18 +81
=> 396 - 18
=> 378.
Therefore,
The correct mean = 378/9
=> 42.
HOPE IT WILL HELP YOU....... :-)
Mean of 9 observations = 35
Therefore,
Sum of these observations = ( 35 × 9) = 315
Correct sum of these obsetvations =
=> [ 315 - ( Wrong observation ) + ( Right observation)
=> [ 315 - (18) + 81 ]
=> 315 - 18 +81
=> 396 - 18
=> 378.
Therefore,
The correct mean = 378/9
=> 42.
HOPE IT WILL HELP YOU....... :-)
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