Question

The mean of 10 observations was calculated as 40. It was detected on re-checking that the value of 54 was wrongly copied as 45. Find the correct mean.

Answer 1

$\huge\mathbb\red{Answer:-}$

43 is the answer

sum of the 10 observations

mean = 40

sum = 10 × 40 = 400

Take away the wrongly calculated value :

400-14 =385

Add back the correct value:

385+45= 430

FIND THE CORRECT MEAN

Mean = 430 ÷ 10 = 43

so 43 is the mean ( answer)

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Answer 2

Hope it helps u....✌✌...........