Question

Mean of 100 items is 37 later it was found that one item 90 was wrongly taken as 60 find out correct mean

Answer 1

Answer:

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Answer 2

Correct Mean

Explanation:

Given:

Mean = 37

Total number of observation = 100

Wrong taken observation = 60

Right observation = 90

Computation:

Mean = Sum of all observation / Total number of observation

37 = Sum of all observation / 100

37 × 100 = Sum of all observation

Sum of all observation = 3,700

Right sum = 3,700 + Right observation - Wrong taken observation

Right sum = 3,700 + 90 - 60

Right sum = 3,730

Right mean = 3,730 / 100

Right mean = 37.3

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