Question

# Mean of eight observation is 25 if one observation 11 is excluded, find the mean of the remaining

Solution

## If the mean of 8 observations is 25, its total is 25 * 8 = 200. If the observation 11 is excluded, then the total of 7 observations will be 200 - 11 = 189. Therefore, the mean of 7 observations with a total of 181 is 189/7 = 27Mathematics

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