Math, asked by jiffrinprakashmoryan, 4 months ago

Arithmetic mean of nine observations is calculated as 38. But in doing so, mistakenly
the observation 27 is taken instead of 72. Find the actual mean of the data.​

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Answers

Answered by ranjanaayush89
6

Answer:

137/3

Step-by-step explanation:

mean=sum of observation/total number of observation

mean=38+27+72/3=137/3

Answered by sundarammuthuselvi92
14

Answer:

43.

Step-by-step explanation:

Mean = Sum of observations / total number of observations

Mean = Sum of observations / 9

Mean = 38 × 9

= 342.

lf a number is mistakenly written as 72 then 45 should be added to the sum.

Sum = 342

Actual sum should be :

342 + 45

= 387.

Mean = sum of observations / total number of observations

Mean = 387 / 9

Mean = 43.

hope the answer helps you.

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