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AP EAMCET202421 May 2024Evening ShiftMathematicsStatisticsActual

The coefficient of variation for the frequency distribution is array |c|c|c|c| _i & 4 & 3 & 1 _i & 1 & 3 & 5 array

Options

  1. A50 3
  2. B125 2 3
  3. C100 3 2
  4. D100 3

Correct answer

D. 100 3

Step-by-step solution

array |c|c|c|c|c| x _ i & f _ i & f _ i x _ i & D = x _ i - & f _ i D ^ 2 4 & 1 & 4 & 2 & 4 3 & 3 & 9 & 1 & 3 1 & 5 & 5 & -1 & 5 & 9 & 18 & & 12 array Mean ( )= f_i x_i f_i = 18 9 =2 Standard deviation ( )= f_i D^2 f_i = 12 9 = 2 3 Coefficient of variation = 100= 100 3 .

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