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For data -1,1,4,3,8,12,17,19,9,11 ; if M is the median of first 5 observations and N is the median of last five observations then what is the value of 4 M-N ?

Options

  1. A7
  2. B4
  3. C1
  4. D0

Correct answer

D. 0

Step-by-step solution

First 5 observations : -1,1,4,3,8 i.e. -1.1 .3,4.8 Median (M)=3 Last 5 observations : 12,17,19,9,11 i.e. 9,11,12,17,19 Median (N)=12 4 M-N=(3 4)-12=0 .

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