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The mean of 15 observations is 16.4 . If we remove one observation from it then the mean of remaining observations is 17 , then find out the removed observation ? [ Calculator, Method and examples ]

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Your problem `->` The mean of 15 observations is 16.4 . If we remove one observation from it then the mean of remaining observations is 17 , then find out the removed observation ?


Here Mean X `= 16.4` and `n = 15`

`Sigma X =` X `× n = 16.4 × 15 = 246`

After removing one observation, the mean of remaining observations is `17`

`:.` the correct sum `Sigma X = 17 × 14 = 238`.

`:.` the removed observation `= 246 - 238 = 8`.






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