Question

The mean salary paid to 1,000
employees of a factory was found
to be Rs. 180.40. Later on it was
discovered that the wages of two
employees were wrongly taken as
Rs. 297 and Rs. 165 instead of Rs.
197 and Rs. 185. Find the corrected
mean.​

Answer 1

Answer:

Let's denote the sum of all employee salaries as S, therefore we have:

S/500 = 180.4

Let's denote the correct mean salary as x, therefore equation for x:

x = (S - 297 + 197 - 165 + 185) / 500 = S/500 - 80/500 = 180.4 - 0.16 = 180.24

The correct mean salary is equal to 180.24

Explanation:

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Answer 2

Answer:

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