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Marks obtains by all the students of class 12 are presented in a freqency distribution with classes of equal width. Let the median of this grouped data be 14 with median class interval 12-18 and median class frequency 12 . If the number of students whose marks are less than 12 is 18 , then the total number of students is

Options

  1. A52
  2. B48
  3. C44
  4. D40

Correct answer

C. 44

Step-by-step solution

aligned & median = + ( N 2 - F f ) h & =12+ ( N 2 -18 12 ) 6=14 & ( ~N 2 -18 12 ) 6=2 & ~N 2 -18=4 ~N =44 aligned

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