Question 53

The average weight of 25 bags is 55 kg. The weight of one bag was misread as 65 instead of 56. Find the correct mean value.

Solution

Total weight of 25 bags = $$25\times55=1375$$

Total weight after correction = 1375 - 65 + 56 = 1366

Correct mean value = $$\frac{1366}{25}=54.64$$.


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