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The median of 27 observations of a varia...

The median of 27 observations of a variable is 18. Three more observations are made and the values of these observations are 16, 18 and 50. What is the median of these 30 observations?

A

18

B

19

C

25.5

D

Can not be determined due to insufficient data

Text Solution

Verified by Experts

The correct Answer is:
B
Median is middle of data. Observation are 27 and median is 18. So, sum of all the observation are `18xx27=486`.
Now, 16, 18 and 50 are additional three observations.
So, Total `=486+16+18+50=570`.
and number of obs. Are 30.
`therefore" Median"=(570)/(30)=19`
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