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20 March, 00:54

Paula's grades on her history tests this semester are: 79,93, 92, 86, and

90. What is the mean absolute deviation (MAD) of Paula's history grades?

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Answers (2)
  1. 20 March, 02:53
    0
    The MAD is 4.4.

    Step-by-step explanation:

    1. 79+93+92+86+90/5 = 88 = Mean.

    2. Apply |values - mean| 9+5+4+2+2=22

    3. Divide by total of values, 22/5 = 4.4.
  2. 20 March, 04:34
    0
    4.4

    Step-by-step explanation:

    Data set = 79, 93, 92, 86, 90

    Xmean = (79 + 93 + 92 + 86 + 90) / 5

    = 440/5

    Xmean = 88

    MAD =

    (79 - 88) + (93 - 88) + (92 - 88) + (86 - 88) + (90 - 88) / 5

    =

    (9) + (5) + (4) + (2) + (2) / 5

    =

    22/5

    Mean Absolute Deviation = 4.4
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