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NDA 2023
Exam
NDA
Year
2023
Subject
Mathematics
Chapter
Statistics

NDA 2023 · Mathematics · Statistics

For data -1,1,4,3,8,12,17,19,9,11 ; if M is the median of first 5...

For data −1,1,4,3,8,12,17,19,9,11-1,1,4,3,8,12,17,19,9,11; if M is the median of first 5 observations and NN is the median of last five observations then what is the value of 4M−N4 M-N ?

Options

  1. A77
  2. B44
  3. C11
  4. D00

Correct answer

D. 00

Step-by-step solution

First 5 observations : −1,1,4,3,8-1,1,4,3,8 i.e. −1.1.3,4.8∴-1.1.3,4.8\therefore \quad Median (M)=3(M)=3 Last 5 observations : 12,17,19,9,1112,17,19,9,11 i.e. 9,11,12,17,19Median⁡(N)=12∴4M−N=(3×4)−12=09,11,12,17,19\operatorname{Median}(N)=12\therefore \quad 4 M-N=(3 \times 4)-12=0.
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