Question

the mean of 10 observations was found to be 35 later on it was discovered that an observation 81 was misread as 18 find the correct mean of the observations please answer
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Answer 1

Sun of observations=35x10=350
Misread obs.-18
Sum of correct observations-350-18=332
New sum- 332+81=413
New mean- 413/10= 41.3

Answer 2

Answer:

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