Mean Average Deviation

What is the second step when calculating the Mean Absolute Deviation?

• Find the distance each value is from the mean

• Find the mean of the distances

• Find the mean of the data

What is the third step when calculating the Mean Absolute Deviation?

• Find the distance each value is from the mean

• Find the mean of the distances

• Find the mean of the data

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

• 3

• 5

• 1

• 2

Which mean absolute deviation would have a greater variability or spread?  4.2 or 8.5?

• 4.2

• 8.5

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

• 4.2

• 8.5

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

• True

• False

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

In calculating MAD, after you find the average or mean you must _____________. 

• do nothing because you're done

• Find out the distance each number is from the mean.

• Find the distance each number is from zero.

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