Using the table Paint Sales Time Series, calculate the mean absolute deviation for a three day moving average.
Paint Sales Time Series
Week Sales (000s of gallons)
1 6
2 8
3 10
4 9
5 11
6 12
7 10
8 8
9 7
10 9
A. 2.67
B. 1.76
C. 2.54
D. 3.67
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