GoldAndHoney
GoldAndHoney GoldAndHoney
  • 13-06-2018
  • Mathematics
contestada

Help please! how do you find the absolute deviation of a data set?

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iGreen
iGreen iGreen
  • 15-06-2018
You find the mean absolute deviation by first finding the mean, and then subtracting all the values in the data set from that, creating a new data set, and then you find the mean of this new data set.

Example:

3, 2, 5, 9, 4

Mean(add them all, divide by how many there are): (3 + 2 + 5 + 9 + 4)/5 = 4.6

Subtract 4.6 from/to all the values:

4.6 - 3 = 1.6
4.6 - 2 = 2.6
5 - 4.6 = 0.4
9 - 4.6 = 4.4
4.6 - 4 = 0.6

Find the mean of these values:

(1.6 + 2.6 + 0.4 + 4.4 + 0.6)/5 = 1.92

So the mean absolute deviation is 1.92.
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