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Which one of the following is the mean of the data given below? array cccccccc x_i & 6 & 10 & 14 & 18 & 24 & 28 & 30 f_i & 2 & 4 & 7 & 12 & 8 & 4 & 3 array

Options

  1. A17
  2. B18
  3. C19
  4. D20

Correct answer

C. 19

Step-by-step solution

array |c|c|c| x _ i & f _ i & x _ i ^ i 6 & 2 & 12 10 & 4 & 40 14 & 7 & 98 18 & 12 & 216 24 & 8 & 192 28 & 4 & 112 30 & 3 & 90 & 40 & 760 array x = x_i f_i f_i = 760 40 =19 Mean of the given data =19 .

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