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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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

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.