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Question

The runs scored by RCB in the first 6 matches of IPL-17 are respectively 172, 157, 148, 142, 161, 213. Find the mean deviation about median of the scores using the assumed mean method.


A

13.5

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B

14.5

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C

15.5

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D

16.5

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Solution

The correct option is D

16.5


Arrange the scores in ascending order
142, 148, 157, 161, 172, 213

Median=157+1612=159

Calculate deviations about an assumed mean (A) of 160.

Deviations from the assumed mean are tabulated below

XD=|XA|1421814812157316111721221353D=99

M.D(M)=D+(MA)(fBfA)n=99+(159160)(33)6=996=16.5


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