Mean Absolute Deviation

Which mean absolute deviation would be more consistent? 4.2 or 8.5?

• 4.2

• 8.5

Find the Mean Absolute Deviation: (MAD)

10, 9, 3, 8, 10.

• 3

• 5

• 1

• 2

Which M.A.D. would show the most variability?

• .5

• 1

• 1.5

• 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:
58, 38, 54, 48, 26, 36

• 43

• 20

• 10

• 12

What is the mean absolute deviation of the numbers:

10, 8, 5, 12, 20

• 3.4

• 4

• 11

• 5

What is Mean Absolute Deviation?

• The mean of the data

• The absolute value of the mean

• The variation of data values around the mode

• The rage distance between the data values and the mean

True or false? :The larger the Mean Absolute Deviation the more consistent the data is.

• True

• False

In calculating MAD, after you find the absolute deviations you must _____________.

• Do nothing because you are done.

• Subtract them from the mean.

• Find the mean of the absolute deviations.

True or false?: You subtract the mean from each data value to find the absolute deviation.

• True

• False