Question

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

Answer 1

Explanation:

Mean=

9

Sumofobservations

38×9=Sum

342=Sum

As 27 is mistaken for 72, the correct sum of 38 observations will be,

342−72+27=297

The actual mean will be,

Mean=

9

297

=33

Answer 2

Answer:

Mean=

9

Sumofobservations

38×9=Sum

342=Sum

As 27 is mistaken for 72, the correct sum of 38 observations will be,

342−72+27=297

The actual mean will be,

Mean=

9

297

=33

Explanation:

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