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The mean of 50 observation is 36. if two...

The mean of 50 observation is 36. if two observation 30 and 42 are to be excluded, then the mena of the reamining observations will be-

A

36

B

38

C

48

D

50

Text Solution

Verified by Experts

The correct Answer is:
A
`barx=(sumX_(i))/(n)`
`36=(sumX_(i))/(50)rArrsumX_(i)=1800`
Now `sumX_(i)-(42+30)=1728`
new mean `=(1728)/(48)=36`
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