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Heuristic method-1
on 07.01.19
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Row minima method
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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 5 of 6
5. The mean of
observations is
. If we add one new observation then the new mean of the observations is
. So find out new added observation.
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Statistics Wording Problem
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 new added observation.
Here `n = 5`, Mean
X
`= 20`
The sum of `5` observation is =
X
× n `= 20 × 5 = 100`
After adding one new observation, the new Mean
X
`= 25`,
the sum of `6` observation = new
X
× n `= 25 × 6 = 150`
`:.` the new observation `= 150 - 100 = 50`.
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