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Question

Find the MAD for  3,9,4,12,8,6

  1. 2.5
  2. 2.45
  3. 2.30
  4. 2.25

The correct answer is: 2.5



    mean=fraction numerator 3 plus 9 plus 4 plus 12 plus 8 plus 6 over denominator 6 end fraction equals 42 over 6 equals 7
    duviation =-4,+3,-3,+5,1,-1
    MAD=fraction numerator left parenthesis negative 4 right parenthesis plus 3 plus vertical line minus 3 vertical line plus 5 plus 1 plus left parenthesis negative 1 right parenthesis equals 15 over 6 equals 2.5 over denominator 6 end fraction

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