Interpret the Mean Absolute Deviation

Find the Mean Absolute Deviation:  10, 9, 3, 8, 10.  The Mean is 8

• 3

• 5

• 1

• 2

Which of the following is the mean absolute deviation for the set of data?
2.50 3.75 1.25 2.25 3.00

• 3.3

• 0.66

• 2.50

• 2.55

Find the MAD for the following set: 85, 90, 68, 75, 79

• 79.4

• 6.48

• 32.4

• 79

Find the MAD:
58, 38, 54, 48, 26, 36

• 43

• 20

• 10

• 12

The graph shows the number of laptops and desktops sold by a computer company over a four-week period. Part A: Determine the mean absolute deviation for the number of laptops sold. ​​ (a)   Part B: Determine the mean absolute deviation for the number of desktops sold. ​ ​ (b)  

• 5

• 10

• 110

• 140

• 40

• 20

Tags

8.11B

The mean absolute deviation of a data set is 3. What does this tell us about the data?

• The average of the data set is 3.

• Each data point is 3 units away from the mean on average.

• The largest number in the data set is 3.

• There are 3 data points in the set.

What is the second step (3) when calculating the Mean Absolute Deviation?

• Find the distance each value is from the mean

  (subtract)

• Find the mean of the distances

• Find the mean of the data

Compare the mean absolute deviation of the data sets: Set A: 10, 10, 10, 10 and Set B: 8, 9, 11, 12.

• Set A has a larger MAD than Set B.

• Set B has a larger MAD than Set A.

• Both sets have the same MAD.

• It is impossible to determine without calculating the mean.

What is the mean absolute deviation of the data: 15, 20, 25, 17, 18

• 4.5

• 2.8

• 4

• 3.8

What does M.A.D stand for?

• Mean as Dirt

• Mean Average Deviation

• Crazy

• Mean Absolute Deviation