Find the mean deviation about the mean f...

Find the mean deviation about the mean for the data : `4, 7, 8, 9, 10 , 12 , 13 , 17`

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What is the mean deviation about the mean for the data 4, 7, 8, 9, 10, 12, 13, 17?

2.5

3.5

What is the mean deviation about the mean for the data 4, 7, 8, 9, 10, 12, 13 and 17?

2.5

3.25

Find the mean deviation about the mean for the following data : 6, 7, 10, 12, 13, 4, 8, 12.

3.76

2.75

2.55