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Statistics Wording Problem
1. The mean of 10 observations is 12.5 . While calculating the mean one observation was by mistake taken as -8 instead of +8 . F ...
2. The mean of 10 observations is 35 . While calculating the mean two observations were by mistake taken as 35 instead of 25 and ...
3. The mean of 15 observations is 16.4 . If we remove one observation from it then the mean of remaining observations is 17 , th ...
4. The sum of 15 observation is 343 . If we remove two observation 18 and 26 , then find out the mean of remaining observations.
5. The mean of 5 observations is 20 . If we add one new observation then the new mean of the observations is 25 . So find out ne ...
6. The mean of observation is 10 . If we add 2 and then multiply or divide by 3 in each observation, then find the new mean ?
Problem 4 of 6
4. The sum of
observation is
. If we remove two observation
and
, then find out the mean of remaining observations.
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Statistics Wording Problem
4. The sum of 15 observation is 343 . If we remove two observation 18 and 26 , then find out the mean of remaining observations.
Here `Sigma(X) = 343` and `n = 15`
If we remove two observation then `13` observation left.
Sum of `13` observation `Sigma(X') = 343 - (18 + 26 ) = 351`
Then the mean of remaining `13` observations = `(Sigma X') / n = 351/13 = 27` .
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